T'was believed that the plane was made as the prime material plane was nearing its phrophetic end known as, the Final Decimation. The conclave of clones known as the Sentry envisioned Xenara to be the collection of all the best, peaceful planes creating a utopia where all mortals could live. However, during the last moments of the Final Decimation of Ahl-Quito, many gods, deities, entities, magists, and the like transferred the essence of their respective planes to Xenara. As a result, the supposed to be utopia of peace of mortals was mixed with all the surviving evils of all the multiverse. Now, the history & lore of countless planes have mixed with each other, clashing and creating this unique world where anything and everything is possible.
Much of the story has been lost to time. The oldest scholars will tell you the story of the Sentry but the elders will tell you of the first enemies of mortals, the Titans.
Elders across Xenara have stories of the mostly gargantuan, Titans. At the dawn of civilization, aberrations roamed freely, leaving decay, destruction and death to an already barren world. Soon, civilizations started to arise and believed that the Titans are an old evil to be put an end to. This led to the start of the First War. Mortals against titans. Many mortal armies fell to the wrath of the titans but at the leadership of special, skilled warriors, the titans fell and those who led the war ascended to godhood.; hence, the start of Pax Xenara.
During the period called, Pax Xenara, through the guidance of the Gods and Goddesses, peace prospered. Civilization progressed to nations, empires, and kingdoms. Boundaries were created and city-states were made the norm.
Now, each kingdom has their version of history and lore regarding Xenara and their place in the known plane.