In a tragic turn of events, Fable's life, once filled with hopes and dreams, is cut short when he and his friends fall victim to the whims of cosmic forces. However, death is not the end for Fable, as he finds himself transported to a mysterious otherworld. There, he encounters a mystical boy with purple hair who bestows upon him the power of a Dungeon Master system, tasking Fable with the creation and management of his own dungeon.

The boy glanced up at Fable, his expression a mix of solemnity and mischief "Fable, take a look. the story, has already begun..."