During his training at the witcher school, he made friends with several students, such as Gweld and Eskel, and was trained by Vesemir in harsh conditions, one in which resulted in a student dying.

Geralt was eventually put through the Trial of Forest Eyes, where he was left tied up in the woods and blindfolded and needed to return to the keep by the morning or he would fail. He was helped out of his binds by the elf Aideen, where they went to look at the non-human reservation to find the camp had been attacked by vrans. They then left and came across some Cat School witchers training and wrestling. Aideen then unbound Geralt and left him to return to his master.

Later on, the Wolf School and the Cat School had a tournament between them, organized by King Radowit II who secretly plotted with the Cat School to kill the witchers from the Wolf School. In the first round, Geralt and Gweld faced off, slowly realizing while they were fighting that the whole tournament was a ruse. As they came to that realization however, a druid put a mind control spell upon Gweld which made him violently attack Geralt, forcing Geralt to kill his friend with a sword through the chest. Right after this, soldiers under Radowit's command surrounded the witchers and started to kill them all, but Geralt was able to escape on horseback, causing Radowit to put a bounty on his head.

Geralt then came across Aideen again in the woods, who persuaded him not to kill the soldiers who slaughtered his fellow witchers, though he did kill one of Radowit's men that he saw along his trip back to Hertch, where he warned the elders about Radowit and the Cat School's betrayal.

An unknown time later, Geralt and Dandelion traveled to a village where they went fishing but the line snapped and their meal escaped. The two started to fight about who was at fault and started to leave before Dandelion realized the line had caught an old jar that he thought might contain a djinn. On realizing there was a mage's seal on the jar, Geralt tried to warn the bard not to touch it but in their scuffle, the seal came off and the djinn appeared. As Geralt grabbed his swords, Dandelion began to make wishes, which only angered the djinn and it grabbed Dandelion's throat. With his weapons doing little damage, Geralt grabbed the seal out of desperation and used the words of an exorcism a priestess had taught him and miraculously the djinn ran off.

However, the bard was badly injured so Geralt hastily made for Rinde in hopes of finding someone to help. Despite Dandelion's severe injuries, anyone of low stature wasn't allowed to enter after sunset so all they could do was wait it out with the others there, including Chireadan, Errdil, and Vratimir. Eventually the group revealed there was only one known mage in town who could help: Yennefer of Vengerberg who, despite King Heribert's orders that no magic users could stay in Redania, was staying with the honorary Novigrad ambassador, Beau Berrant, thus giving her asylum while she stayed with him.

As soon as sunrise hit, Geralt made his way to the ambassador's home, knocking out the doorman, Cerberus, in the process. While he searched the home for the sorceress, he ran into a drunk and naked Berrant, who mentioned a woman wanting juice before he passed out. Geralt got the apple juice, then made his way up to the sorceress' room and gave her the drink, who didn't notice at first that he was not Berrant as she was under the bed covers. However, once she appeared naked from under them, she quickly realized the situation and demanded answers from Geralt, who answered sarcastically, causing her to immediately cast a spell at him which Geralt tried to counter with Heliotrop. Desperate for her help, Geralt changed to a respectful tone, explaining why he'd intruded on her sleep, before eventually revealing the djinn and the exorcism statement he made. However, Yennefer remarked it wasn't an exorcism, just a witty, indecent comment before asking what drove the djinn away and the seal that'd been on the bottle. While Geralt noted it probably went to do one of Dandelion's wishes, he hid the truth about the seal, pretending Dandelion had it. The two then traveled by portal to Errdil's inn so that Yennefer could help the injured bard.

As Yennefer worked on healing Dandelion, Geralt and Chireadan discussed the sorceress, with the two men both revealing in their own ways they found her attractive, though the elf noted that Geralt should be wary of Yennefer, as she didn't do things to help others unless she was also getting something out of it. After some time, Yennefer then called the witcher up to the room to see Dandelion only to then release a magical trap on Geralt and revealing she knew he had the seal. After some back and forth comments, Geralt gave it to her as a gesture of goodwill that he'd pay her for her help, however this was fruitless as Yennefer had something else in mind and Geralt quickly deduced she wanted to use Dandelion, who had a connection to the djinn, to try and lure it back to capture it for herself. The witcher adamantly refused to put Dandelion in danger again, but by then Yennefer's other spells took hold, paralyzing the witcher and obscuring the room in a magical shield so nobody could interfere. With that, she then told Geralt he was going to pay for her help by settling some of her accounts in Rinde before violently kissing him, which placed a hypnotic spell on the witcher before he soon lost conscious.

Geralt woke to find himself in the city's dungeons with Chireadan, who revealed in his mind-controlled state that Geralt had beat up the local pawnbroker and his apprentice, spanked the local apothecary Laurelnose, took out a group of guards, then made his way to the temple while insulting the priest, Krepp, as all 3 were on the town council and had voted to kick Yennefer out of Rinde while also spreading vulgar gossip about her. However, before Geralt could make it to the temple he fainted and the guards threw him into the dungeons, with Chireadan having been caught in the chaos and thrown in as well. Just then, several guards sent by Laurelnose came in and began to beat up Geralt, but when the one throwing the punches asked if the witcher had any wishes, Geralt stated he just had one: that the guard would burst and, before another punch could be thrown, the guard's body literally burst, killing him instantly.

With that, Geralt and Chireadan were brought before the mayor, Neville, with Krepp also in attendance, with the latter noting it must have been the sorceress' work as neither the witcher or elf had control of the force to do so. After revealing almost the entire story to the mayor and priest, Krepp then concluded Yennefer wanted the djinn as it would give the sorceress a great deal of power and when the conversation turned to what Geralt said that made the genie run off, Geralt repeated the supposed exorcism only for Krepp to become insulted by it. Before more could be asked on this, Dandelion suddenly fell into the room through a portal, proclaiming Geralt was innocent and that Yennefer had ordered him to state before the mayor his wish was for them to believe the witcher wasn't guilty. Krepp quickly deduced it was the sorceress' way of using the last wish to free the genie so she could capture it when the group heard a thunderous noise outside of the building and looked out to see the djinn flying above Errdil's tavern, having being magically lassoed by Yennefer. However, the djinn wasn't going down without a fight and was destroying all the nearby buildings as it tried to break free.

Wishing to save Yennefer, Geralt got Krepp to cast a spell to re-open the portal Dandelion had come through but not before asking what the words of the exorcism he said earlier meant, to which Krepp paraphrased that it meant "get out of here and go fuck yourself!". With that, Geralt entered the portal and landed in Errdil's tavern and where Yennefer was still trying to capture the genie while her powers waned. Seeing Geralt, she opened a portal to send him away as the djinn entered the tavern through its own portal to kill the sorceress, but Geralt threw himself between the two, shielding Yennefer. Shockingly, the genie didn't attack the witcher, but appeared to roar in an unknown language at him. Trying to get Yennefer away from it, Geralt pulled the sorceress through the portal she'd opened, though she yelled and threw punches at the witcher, claiming she almost had the genie, before rushing back through the portal with Geralt trying to grab her once more. As they crashed back in the tavern, Yennefer managed to cast a spell to pin the witcher down, but Geralt, trying to save her, informed her of the truth: he was the one making the wishes as he'd been the one holding the seal when he made his first wish (the "exorcism") and had one wish left.

As a weakened Yennefer demanded Geralt make his last wish so she could hopelessly try to capture the genie, Geralt finally realized what he wanted and that would also save Yennefer from the genie's wrath and wished their fates be tied, thus freeing the genie while preventing it from killing the sorceress. With that, the genie escaped back to its realm and Geralt and Yennefer proceeded to make love in the destroyed tavern.

After the events in Rinde, Yennefer and Geralt started a rather physical relationship, spending the majority of their time at Yennefer 's home in Vengerberg, Aedirn, and putting to good use a wide variety of the sorceress' collection, including a stuffed unicorn, as well as having sex in rather unusual situations, like levitating 30 fanthoms above ground. However, the witcher finally decided to leave after half a year in the city, considering Yennefer's behavior as too possessive. Unable to initiate the parting though, the witcher ran off during the night, leaving only a rose and a letter on the bed as his farewell.

A while later, Geralt traveled to Vizima and visited The Fox but, while in the process of trying to find a bed to rent, was attacked by three racists who didn't approve of his Rivian accent. A short fight unfolded where Geralt killed the men but right after members of the city guard appeared and attempted to arrest him, though using Axii, Geralt was able to manipulate them into taking him to Velerad, the city castellan, instead.

Once he met Velerad, the pair took time discussing the real reason Geralt was passing through: King Foltest of Temeria had put out a contract to cure his daughter, Adda the White, who was cursed and turned into a striga. After Geralt went and saw Foltest, and they reached an agreement: for 3,000 orens, Geralt would try to successfully release Adda from her curse, without killing her, as many had attempted in the past. The witcher then discussed the plan further with Foltest's underlings, Ostrit, Velerad, and Segelin, who agreed the witcher should spend a night in the old city with the striga.

Four days later, after talking to survivors of the beast, speaking further with Foltest, and finalizing plans, Geralt traveled to the old, abandoned palace and set up camp there, preparing his potions and meditating before he was found by Ostrit in the dead city. The magnate then tried to bribe the witcher with 1,000 orens to leave the place and never return, all while keeping the cursed Adda in her form. As Geralt questioned Ostrit's reasoning, noting a striga on the loose would make people lose faith in their king and possibly remove Foltest, the magnate grew frustrated and tried to fight the witcher, who quickly knocked out the man and tied him up.

Ostrit came to shortly after and soon realized Geralt planned to use him as bait to lure out Adda. He then confessed to the witcher he did want to overthrow Foltest, but more than that, he wanted the king to suffer because Foltest had taken the one Ostrit had loved, Adda of Temeria, who was the king's own deceased sister and lover. However, he was adamant he couldn't have possibly caused the curse as he didn't know how to use magic and that Foltest and Adda's mother, Sancia of Sodden, must have done it as she too didn't agree with the incestous relationship. Geralt, however, heard the beast start to move out of her crypt and cut the magnate loose, who quickly took off to try and fruitlessly escape, but was quickly killed by the striga.

Geralt and the striga then faced off against each other, though Geralt took care not to kill her, only looking to buy enough time to get her away from her crypt. Eventually managing to send her running, Geralt quickly hid himself in her tomb and closed it, casting Yrden on the cover before meditating until dawn. Awaking a few hours later, right at dawn, he slipped out of the tomb to find Adda, now in human form, lying next to the tomb. However, as Geralt checked her teeth to make sure the transformation was complete, the still transforming girl awoke and slashed deep cuts in Geralt's neck with her talons. The witcher quickly pinned her down until she completely transformed back to human, but right after Geralt fainted from the blood loss.

Two days later, Geralt woke up in the new palace with Velerad looking after him, who explained they'd raced into the old palace right after dawn and found the badly injured witcher and saved him. Geralt then asked about the princess' condition and as the castellan explained she was fine, Geralt fell asleep once more.

After fighting and releasing the striga, Geralt traveled to Ellander to recover at the Temple of Melitele. He was cared to by and quickly developed a relationship with one of the priestesses, Iola, who was studying under Nenneke, who he ended up sleeping with, as she reminded him of Yennefer. The next morning, the two were arose by Nenneke, who didn't want them in a relationship together, so she sent Iola out to continue with her duties. The older priestess had a look at Geralt's injuries and then after some assessment, sent the witcher to go eat breakfast, before joining him again in the temple gardens.

The two then discussed Iola using magic to put Geralt in a trance, and maybe reveal something about his destiny and future, though the witcher didn't want to undergo such a thing. Not long after that, Count Falwick and Arthur Tailles, members of the Order of the White Rose, arrived at the temple and confronted Geralt and Nenneke, asking the witcher to leave Ellander by the orders of Duke Hereward. Tailles' attitude was met by Nenneke who declared the temple belonged to her and she decided who came and left, threatening the young knight with a small porcelain jar that was potentially harmful. Geralt decided to tell the men of his plans to leave Ellander in the next few days and adding insult to injury, started to insult Tailles, who furiously left the temple with his partner.

Geralt later went and saw Iola, explaining Kaer Morhen and his training as a witcher, as well as contracts he had taken throughout his life on the path. After spending some time alone and reading, Geralt was informed by Nenneke that Dandelion was at the temple to visit him, just before the poet turned around the corner. The two discussed recent events and Dandelion's education before the witcher bought out vodka and they started to drink, with Geralt complaining about a lack of work in the area. After his drink with Dandelion, Geralt went to the grotto in the garden and had a look at the many exotic herbs there while Nenneke harvested them. She asked him to stay a couple more days at the temple, which request was quickly turned down by the witcher, as he was preparing to leave that day.

After leaving the temple with Dandelion, the witcher started to ride towards the city of Ellander before he was confronted by Falwick, Tailles and Dennis Cranmer, with Falwick declaring the young knight and the witcher must fight, as Tailles' pride had been injured at the temple. Falwick then informed Geralt that he had to throw the fight, as hitting the knight would have him arrested and thrown in front of Hereward. Geralt agreed to the fight and easily outmanoeuvred the young knight, making him hit himself in the face, which Falwick believed was worth Cranmer arresting Geralt according to his orders, but the dwarf believed that Tailles had hit himself and that wasn't worth arresting the witcher for. As Geralt prepared to leave, he threatened Falwick, saying if he ever threatened Nenneke or Cranmer again, he would die for it.

The two headed back to the temple, where he prepared to travel, packing up his horse and saying his goodbyes. Iola came out and gave him his elixirs and after their hands touched, she started to suffer a seizure, which Nenneke told Geralt to ignore and leave, which he did.

Most of the time, he could be apathetic, cynical, and threatening. Despite his outwardly cold nature, Dandelion noted that behind his exterior was hiding a fiercely loyal friend, and a man of good humour and as someone not indifferent to suffering. Geralt had many good friends all over the Northern Realms, such as Caldemeyn of Blaviken, Zoltan Chivay, and of course Dandelion. He was also very protective of and loyal to his friends and companions, and was willing to go to great lengths for those who mattered to him. He could be kind-hearted and caring to the people he loved.

Geralt was also shown to be extremely adept at allaying intense, and at times bleak, situations and as a man who would much sooner have everyone return home than draw their swords. His lifespan made him a world-weary man, often expressing disdain and circuitous insults to those he considered cruel, foolish, etc. He may have risked Temeria's future to save Triss Merigold from the Nilfgaardians. He also was shown requesting Scoia'tael to spare Dandelion and kill only him.

Geralt frequently showed remorse and had revelations in his life. Other times he had complete emotional breakdowns, even giving up being a witcher in general and dropping his morals at one point.