The Warriors are aboard an ocean cruise liner to catch drug syndicate target 19, A.K.A. Dragon Tail. Unfortunately, Yugi and Matsuri are also on the cruise complicating matters. Rio encounters agent 19 who romances her rendering her ineffective. The rumored drug deal is actually a trap to eliminate the Warriors, and they face both agent 19 and his young female drug-addicted, knife-wielding assassin. May and Rio defeat their opponents but before he dies, 19 reveals that he was hired to assassinate the Warriors.