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?

Documentary on the Japanese boxer Unchain Kaji, who retired from the ring at the age of 30 with an eye injury and a losing record. He then tries to start a new life as a civilian.