While dreaming, a hard working family man is approached by a child-like god that has become bored of their custom created gaming world. Allowing the man to choose whatever 'Class' he wants, he chooses to become a 'Time Wizard'. He's dropped off in a city above a labyrinth with only this directive.

"You just have to play my game, which is styled after your world's dungeon exploration RPGs, level up, and save the world. Or don't. I don't care."