Billy the Mighty Mage (who briefly considered changing his name to bill but decided against it) had just died in a battle with the demon King, Archhaven. However, thanks to poor observation skills on Archhaven's part, he was able to rejuvenate his body. New personality, new look, and new limitations. Whilst trying to preform an astral teleportation spell on both himself and Archhaven to keep his friends out of harm's way, he ends up you-know-where.
(Teen for colorful language on Billy's part)