The FBI is in charge of the kidnapping investigation and the last thing it needs for Lee to interfere. In an effort to get his foot in the bureau's door and thinking that he is being promoted, Carter enthusiastically accepts the assignment. But soon realizes his only task is to baby-sit Lee and keep him away from the investigation. This leaves Lee just enough time to get away and tend to more important business.
Cultures clash and tempers flare before the two cops finally join forces to save the young girl.
Once the duo puts their differences aside, Lee teaches Carter a few karate moves while Carter instructs Lee how to keep the beat. There are many funny moments accompanied by Chan's swift karate chops in this film. It is certainly not one of Chan's best pictures, but nonetheless an entertaining comedy.