The film focuses on the Chinese peacekeeping police performing overseas missions. They wear blue helmets and are fully armed, marching trough danger, just to maintain the security and peace of the world. How will the members of the peacekeeping deal with new and severe challenges?

China's deadliest special forces operative settles into a quiet life on the sea. When sadistic mercenaries begin targeting nearby civilians, he must leave his newfound peace behind and return to his duties as a soldier and protector.