Following his confrontation with the nefarious DOA organization, Ken (Chow Yun Fat) is looking forward to going back to enjoying his retirement. His rest is cut abruptly short when his protégé Vincent (Shawn Yue), who’s now working for Interpol, asks for Ken’s help in taking down the real mastermind behind DOA, Aoi. The two head to Thailand, where DOA’s former chief accountant Mark (Nick Cheung) has escaped with his daughter.
Airline pilots Cool, Sam and Guy were proud womanizers whom all took tremendous pleasure in making the rounds with every stewardess they came across. But one day during a seemingly routine flight, they encountered a violent magnetic storm that sent them falling through a wormhole. Upon landing, they assumed the storm had blown them off course onto a film set, but in reality, they had travelled back in time to Ming Dynasty, China.