In New York, Ash Lynx a boy with an perfect appearance and outstanding fighting power has been leading a street gang at the age of 17. One night, Ash is told the word "Banana Fish" from a man shot by his own subordinate. The word was that Griffin, his brother who was pretty crippled, often mentioned. At the same time, he meets Eiji Okumura, a Japanese boy who came as a photographer's assistant.

Ash falls into the hands of Golzine, following a deal with Yut Lung. Eiji senses that Yut Lung has something to do with Ash not coming back and goes to see Sing to find out more about it. Meanwhile, Yut Lung approaches Blanca, who has just sealed the deal with Golzine, and invites him to work with him instead.

Eiji is shot, and is taken to the hospital. Ash tries to go with him, but it's none other than Blanca who stops him. Blanca tries to take care of Ash's wound, but Ash points a gun at him. Meanwhile, Sing who is feeling guilty for two of his guys shooting Eiji and Ash, makes one important decision...