When runaway teen Ju-Ju is embraced by a tribe of misfit youths in Kabukicho, she finds belonging for the first time — until betrayal and despair twist her haven into a prison, and she's left with one way to take back control.

A young man decides one day to start killing yakuza. After he kills his first two he gets roped into helping a wannabe gangster and his bumbling underlings to perform a hit. While things work out in the beginning, this young psychopath quickly becomes more trouble than the gang expected. Will they be able to rid themselves of him, or will they be his next victims?