The police does not know what to do. They have to deal with a serial killer who aims at martial arts masters. One after another is killed in the same brutal way. This may be a chance for detective Linda Masterson to work on her first murder case. She gets the job and to her side an other martial arts specialist, Sgt. Tarek Richards. Now they need to find a tiger style master, because the killer obviously uses tiger style kung fu. Not a simple task, since tiger is a very ancient and rare style.

Seen-it-all New York detective Frank Keller is unsettled - he has done twenty years on the force and could retire, and he hasn't come to terms with his wife leaving him for a colleague. Joining up with an officer from another part of town to investigate a series of murders linked by the lonely hearts columns he finds he is getting seriously and possibly dangerously involved with Helen, one of the main suspects.