A tough cop is dispatched to take down a serial killer who has been targeting police officers.

When his mentor is taken captive by a disgraced Arab sheik, a killer-for-hire is forced into action. His mission: kill three members of Britain's elite Special Air Service responsible for his sons' deaths.

Transporter Frank Martin, surfaces in Miami, Florida and is implicated in the kidnapping of the young son of a powerful USA official.

Frank Martin, who "transports" packages for unknown clients, is asked to move a package that soon begins moving, and complications arise.