Start: Moana Bay, after winning the League Tournament
Gladion investigates a rumor that an Ultra Beast has been sighted in the Aoroa region. Support him in his research and uncover the mystery.
Stage 1 – Meet Gladion and Lillie
Meet Gladion and Lillie at the harbor in Akarana City, just south of the market stalls.
Stage 2 + 3 – Investigate the rumors
Lillie tells you and Gladion that she heard rumors of an Ultra Beast sighting somewhere in Aoroa. Gladion asks you to help him investigate. Travel to Avon City and meet Gladion there. Together, you’ll head toward Route 18. Gladion mentions a mysterious passage he wants to examine. Enter Mt. Aoraki and follow Gladion up the mountain.
Stage 4 – Investigate the Ultra Wormhole
At the top, Gladion has already discovered something. Follow him into the cave and you’ll find an Ultra Wormhole inside. When you inspect it, an Ultra Beast appears — you can choose to defeat or capture it. Afterward, Gladion decides to stay in Aoroa to help ensure the area’s safety and asks you to meet him in the nearby cabin.
Stage 5 – Meet Gladion in the Cabin
Follow Gladion to the cabin east of the cave entrance and talk to him.
Stages 6 + 7 – Catch Ultra Beasts
Gladion wants you to continue investigating the Ultra Wormhole. Each day, a new Ultra Beast appears — only catching them will progress the quest.
Catch 3 Ultra Beasts → Gladion gives you a Type: Null.
Catch 5 Ultra Beasts → Lillie joins you in the cabin and gives you a Cosmog. If you evolve Cosmog into Solgaleo or Lunala, show it to Lillie. The opposite one will then appear as a roaming Pokémon in the wild.
After catching 7 Ultra Beasts, report back to Gladion.
Stages 8 + 9 – Catch more Ultra Beasts
Gladion senses there’s still something missing. He asks you to capture two more Ultra Beasts while he investigates the area. These final ones are no longer time-restricted. After capturing both, the Ultra Wormhole disappears from the cave. Talk to Gladion again — he mentions a second cave entrance.
Stage 10 – Meet Gladion in the Cave
You’ll now explore the second cave together. Use Rock Climb west of the cabin to reach the entrance and meet Gladion inside.
Stage 11 – Catch Necrozma
Inside, you find Necrozma battling a Poipole. Capture Necrozma to protect Poipole. Once caught, the Ultra Wormhole closes, and Poipole decides to join your team.
Stage 12 – Talk to Gladion
Return to Gladion in the cabin to conclude the quest.