Amidst the gunfights and bloodshed in a city of sin, there lived two legendary figures, known only as Bullet and Brain. Bullet, as the name suggests, is the sharpest shooter the city has ever seen and can take someone out with a pistol in less than a tenth of a second. Brain, on the other hand, is a calculated genius with excellent problem-solving skills, not to mention some cool gadgetry. These two men are called into action again when an old score involving a little girl needs to be settled.

Jay Chou is a soft hearted, mellow young man that is often fooled and used by women who only want his money. One night, he saved a young and sexy Kung Fu master, Ying Ying and she helped Jay recoup many of his bad debts and kicked his lousy girlfriends away. Surprisingly, Ying Ying is a maestro in gambling - mahjong, football betting and horse racing. However, Ying Ying suffered from amnesia, and could not remember who she was. Nevertheless, Jay plucked up courage to ask her to marry him and she agreed. On the night before their wedding, Ying Ying disappeared! Later, Jay finally found her and she is contending in the Asian God of Gamblers Competition and also had a fiancé named Henry. What was Jay to do?

Once upon a time in Hong Kong, there's this traditional medicine oil company that has come seriously close to bankruptcy. However, its bored-stiff staff - the mean manager Ben Chow, sleazy Tyson, love-deficient Hatou, and clueless newbie Rachel - has nothing better to do than fantasizing about all kinds of sexual escapades in their cold drab little cubicles. Thankfully, their company is taken over by an adult toy enterprise from China, and their wet dreams come true when four delectable new coworkers come to jazz up their office life!

Teddy (Eric Tsang) is a ladies man. He is constantly with a woman, but never accepts the responsibility that comes with a relationship. Short of cash, his friend Wendy (Jo Koo) comes up with a plan for him to impart his knowledge in hitching up women to desperate men who will pay for some tips.

In the early 1970s, the Governor of Hong Kong decided to clean up the police force. The ICAC was established, whose operation branch was headed by Yim. Bong and Unicorn also joined the ICAC. Despite threats of violence and intimidation, they managed to bring about the downfall of the empire of graft.