In the near future, James McCullum (Christopher Eccleston), the founder of the weapons research and development group MARS, invented a micro robot named "Naro Vein", which can devour enemies that block its way in a very short time. The North Atlantic Treaty Organization (NATO) Weapons Research Institute is very interested in this and purchased four Naro Vein warheads from the MARS Group. During the transportation, the convoy was attacked by a group of high-tech militants. When the warhead was about to be snatched away, another group of mysterious people stopped the militants' plan and rescued the only two remaining members of the convoy, Duke (Channing Tatum) and Kaizhao (Marlon Wayans). It was the special forces led by General Hawke (Dennis Quaid) who rescued the Duke. The Duke and Kaizhao requested to join the force to avenge their previous shame. On the other hand, the mastermind behind the conspiracy to seize the warhead was McCullum, who attempted to squeeze huge funds from NATO to support his research and then realize his ambition to dominate the world. A battle between good and evil begins...