Two friends, Hero Hwa (Andy Lau) and Chiang Ho-Chie (Tony Leung) star are two old friends who meet up in later life. Hwa is a triad gang member and Ho-Chie is an insurance salesman, Hero is looking for a career change and Ho-Chie has become disillusioned with life after discovering he has a "bubble" in his brain that could burst at any time killing him. The two decide to switch lives for a bit with the Triad going respectable and the Insurance Salesman taking on the world of the Triads. As well as a new life, both of the two friends find new love.