Xu Jinglei
In the early 1990s, a tractor mechanic nicknamed "Steelhead" (Jackie Chan) illegally enters Japan from China in search of his fiancée, Xiu-Xiu (Xu Jinglei) with the help of his "brother" Jie (Daniel Wu). Jie has taught Steelhead how to make a living by teaching him the trades of the underworld. One day, while illegally working as part of a clean-up crew in the sewers, Steelhead and his Chinese comrades are spotted by the police and run for their lives. In the ensuing turn of events, Steelhead saves Detective Kitano from drowning, and in gratitude, Kitano decides to stop pursuing Steelhead.