Ken was making his life by smuggling methamphetamine with long time buddy, Kazu. Ken has decided to start a new life when he learned that his girlfriend, Saki, became pregnant. At the same time, Ken finds out that Kazu started selling on the side without getting approval from his boss, Mr. Todo. Ken tries to stop Kazu; however, instead, Kazu approaches a new partner. Knowing that this new deal puts their lives in great danger once Mr. Todo finds out... Suspicious of their dangerous involvement, Saki decides to leaves Ken. Mr. Todo finds out and decided to take action... Todo's guys start chasing Ken and Kazu.

Ken and Kazu

One day, Tatsumi, a lonely underworld worker, comes across the murder scene of his ex-girlfriend Kyoko. Tatsumi escapes with Kyoko's younger sister, Aoi, who was with her. On the other hand, Aoi, who has lost her beloved family and vows revenge, pursues the murderer of Kyoko.
 Tatsumi, who is at loggerheads with the impudent Aoi, decides to accompany her on her journey for revenge, and as he cooperates with her, a certain feeling begins to develop.