As a truck driver, Wah frequently works between the Mainland and Hong Kong. He’s always under the encouragement of his workmates to try call girls, but, having a wonderful life with his wife Ling, he never gives it a thought. Wah feels more blessed after Ling gives birth to his son. But Ling has been unwell after her delivery and refuses to make love with Wah. Later, Wah has sex with a poor rural girl named Hung. She is a prostitute and has got infected with AIDS.