Tricked by Volcan into sailing to the merchant city of Arvanrama on the premise of "easy money," Orphen and his friends quickly find themselves in trouble when monsters attack their ship. Somehow, they all make it off the sinking ship safely, only to find themselves stranded on Chaos Island, together with three other travelers: Sephy, Zeus and Mar. They set off to explore the island and learn of a time traveling object.

Upon beating the game you are given the choice to go back in time and replay the story and help out a different person. After helping all three fellow travelers, the final battle initiates, in which you learn the whole thing has been a simulation created by a machine in the center of the island known as Gaia, and the fellow travelers were all chosen by Gaia to be actors in its stories. After defeating Gaia, the three travelers are freed and everyone is able to return home.