话说在纽约市的下水道之中住着四只功夫高强的忍者龟,它们跟随着忍者师父—一只来自日本的超级大老鼠.一次偶然机会,它们救了一名正义的电视女记者,她也成为了唯一知道忍者龟藏身处的人.......

　　It's down and dirty time. Splinter is imprisoned. Leo is dying of poison. Don and Usagi are fighting for their lives and the life of the Daimyo against a horde of assassins....