lin shouyi (played by lee xiuxian), a young worker who has been drunk and dreaming, was an excellent and capable royal policeman at that time. later, he was suspended for beating the suspect after drinking and investigated. his wife, who has always had a disagreement, also took the opportunity to leave him. ccc。 a few years later, detective cheng xi (played by leung ka-hui) and his assistant tie nan took the boy xiao nian to find lin. it turned out that lin's ex-wife was killed not long ago, and only his son xiao nian survived. after a period of time together, the father and son gradually became closer from alienation, and lin also decided to find the murderer who killed his ex-wife.