Wong Chat is jobless. He is forced to become a burglar. He breaks into Han Siu-yu and her boyfriend Cheung Wai-lim's home, but it is just the time when they return. Wong hides in the closet. He eavesdrops that Han and Cheung are a couple, but Han is forced to become the tycoon Chan Koon-kau's mistress for a living. Suddenly, Chan returns, and Cheung hides into the closet too. Wong and Cheung meet in the closet and become friends. Wong is righteous and promises to help Han to escape from Chan's control. Wong and his neighbour Yeung Oi-lin disguise themselves as a pair of Singaporean rich couple and attend a banquet at Chan's home. They want to steal back the document that Chan threatens Han with. But they also find evidence of Chan's drug trafficking. When Chan find out about the stolen document, he confines Cheung and Han and kidnaps Wong's children. But Wong refuses to surrender. During their confrontation, the cops arrive after being informed by Yeung and arrests Chan on the spot.

The Ten Brothers return as the Lake Devil is plagued by a monster fish. To settle the old score, Marshal asks Shrimpy and his ten sons to exterminate the fish. Excelled on land, the ten brothers find themselves quite useless in the water.

American Mark Jason is stranded in Southeast Asia and works there as a teacher. One day, he finds diamonds worth several million dollars in his apartment. Jason quickly succumbs to the temptation to keep the treasure stashed here by the previous tenant for himself rather than handing it in to the police. When his Asian servant, who witnessed Jason's find, is found murdered, the teacher comes under suspicion of having disposed of him. Now Jason has the local police on his tail after all, and he has to flee. The American is accompanied by his Asian girlfriend, Nhan Lee Quon. The local police inspector Gonsart is extremely keen to catch Jason and hunts him down without mercy.