After retiring from the military, special forces soldier Lin Sen meets the CEO of a publicly listed company by chance. The CEO has been pushed out by his competitors and is now under threat of death, so he repeatedly begs Lin Sen to serve as his personal bodyguard. After Lin Sen helps the CEO deal with his troubles, word arrives from his old unit: a former comrade has become a murderer. With the military's approval, Lin Sen helps the police capture the culprit and bring him to justice.
