Po-chai gets hysterical when she sees a seriously wounded Yat-ha. She goes to the roof to catch Kam-mun. The duo scuffle. Po-chai is beaten. Kam-mun even snatches her gun. Meanwhile, sound of gun shots echoes across the roof. Po-chai rushes to the hospital to see a wounded and bedridden Yat-ha. She feels sorry. Yat-ha comes round. The chums are frustrated as he keeps thinking of offering some reward. Po-chai is accused of murder. Mei-la is the prosecutor in this case. She also objects to Po-chai to be released on bail while awaiting trial. Yat-ha scolds Mei-la. Sun-hop and Kwok Lam go to some roof opposite to the incident scene in an attempt to find witnesses. Meanwhile, they find some rough sleepers on the roof. Yat-ha then notices a certain rough sleeper has left the roof. He goes after them and eventually finds a rough sleeper called Lee Biu.
