In this fast-paced action film, recorded in Hong Kong's most famous neighborhood, we meet Cheung. He belongs to the secret group Stealth Drivers, a group for the city's absolute best driver. His old mentor Lo has laid the quick life behind him since he was involved in a serious accident in the pursuit of the city's most deserted refugee driver Sun. But Lo gets back into the game when Sun releases his criminal colleague Huang Xhong from prison to steal a huge diamond. Now the old guard has to work with the new one to keep the bows away from the street.