When evil forces threaten to resurrect Anthrasax, the God of Destruction, the Kingdom of Meta-llicana calls on a volatile dark wizard for help.

Denji has a simple dream—to live a happy and peaceful life, spending time with a girl he likes. This is a far cry from reality, however, as Denji is forced by the yakuza into killing devils in order to pay off his crushing debts. Using his pet devil Pochita as a weapon, he is ready to do anything for a bit of cash.