Danny Bryce (Jason Statham), a former elite member of the famous US Navy Special Forces SEALs, is now involved in a cross-border "secret killing" incident. His opposite, Spike (Clive Owen), is a super agent from another country. This person is also cruel and ruthless, and is planning to get rid of Danny by all means. After a fierce fight, Spike, who seems to be powerless against the powerful Danny, has the idea of his special warfare mentor Hunter (Robert DeNiro), and intends to use Hunter as bait to set a perfect trap to hunt Danny. As a result, after super special training and after hundreds of battles, Danny's combat effectiveness has exceeded the imagination of Spike and even the military. Danny not only rescued his old mentor Hunter after a desperate battle, but also caused great damage to Spike and his gang. The film is adapted from Ranulph Fiennes's documentary literary work "The Feather Men".