Ash is the boss of a street-kids gang in New York. One day, a man who was murdered before his eyes entrusts him with something. And the last words uttered by that dying man was the phrase, "BANANA FISH". Ash has a destined encounter with Eiji, a kind Japanese boy, but as he gets closer to the mysteries behind "BANANA FISH", both Eiji and Ash become entangled into a massive conspiracy--!?