Zhang Haojie (played by Tony Leung) was originally a senior employee of an insurance company with a bright future, but by chance he was found to have a blister in his brain, which could put his life in danger at any time, so Haojie was fired by the company; Hua Yingxiong (played by Andy Lau) was a street gangster who muddled through life every day. It was in this way that two people from completely different circles met, got to know each other, and became good friends. Yingxiong entered the insurance company to work under the introduction of Haojie and started his life again, while Haojie, who was idle at home, helped Yingxiong to take care of some trivial matters. Yingxiong soon gained the appreciation of his female boss, and the two gradually fell in love with each other; and Haojie also met his confidante Fanny (played by Fennie Yuen) by chance, and the two slowly fell in love. At this time, a series of accidents happened.