Nurse Li (played by Sam Hui) is a nurse in a mental hospital. Once, by chance, he discovered that the hospital's odd job, Tim (played by Sam Hui), often stole valuable items from dead patients in the morgue. So, Nurse Li proposed a 40%-60% split, and Tim had no choice but to accept. The two of them cooperated in this sneaky business. One day, a new patient, the big man Qiao Ming, came to the hospital. He died of mental illness shortly after being admitted to the hospital. Tim found some fragments of valuable antiques on Qiao Ming in the morgue. The two excitedly investigated and learned that Qiao Ming had a daughter, known as the princess. They found the princess and coaxed the princess to learn that Qiao Ming often scuba dived at a beach in Hong Kong before his death. After the two came to the beach, they easily found the priceless antiques, but at this time, an accident happened!