FU takes his mother’s charm to break into the Cheung Lok Fon with MING and SHAN. The Unbeatable Knife owner, WONG KU LIK sets up four obstacles for them. FU drops the charm during the challenge. BUN arrives and pretends to rescue the three geniuses while they are trying to overcome the obstacles.

KIN pays a prostitute to drug the three geniuses. LIN suddenly appears when they wake up. The three geniuses are accused of using the excuse of rescuing LIN as a pretext to visit prostitutes. They have no way to explain the misunderstanding, which was created by KIN and BUN in order to humiliate the three geniuses. TAK and his wife go to visit their ancestors’ graves and find strange things around the Chow ancestors’ graves. BUN in fact is the Chow’s descendent. The reason that he is in China is to take revenge on FU’s family.