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.