After the thief Black Cat (Sam Hui) robbed the diamonds of an international criminal organization, he escaped with the help of various tools. The white gloves left by Black Cat at the scene made the Hong Kong police mistakenly believe that the perpetrator was the international thief "White Gloves". The police invited the American bald detective (Maggie Cheung) who had been hunting for White Gloves for many years to investigate the case, and sent a capable female police officer Ho Tung Sze (Sylvia Chang) to assist. On the other hand, the owner of the diamond, the Italian mafia, asked White Gloves to arrive in Hong Kong to retrieve the diamond. The bald detective and Black Cat did not know each other, and under coercion and inducement, Black Cat decided to help the detective get the White Gloves. The three-person team accidentally hit and hit to retrieve the lost diamond and caused a series of troubles. When Black Cat finally got the diamond, the lurking White Gloves also appeared at the same time...