A crime solving triangle formed by Go Sir, Dr. Man and Detective Kwok work together with their investigative teams to solve murder mysteries.
During a video shooting session at the TV station, Cantonese opera clown Lang Siu-bo suddenly vomits blood.
The opera troupes Zhangban Wong Lap-keung is killed.
Ying-suet denies hurting Shuk-man. Shuk-man claims she has had an accident.
Ko On and Fai-wong come up with a scheme to solve the opera troupe multiple deaths case.
Based on the type of algae on the floating clown corpses clothing and direction of current on the date of death
The parachute see anchor enables Ko On to track down the name of a yacht to which it belongs.
