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.

Ken / Ko Chun
Molly
Mark
Vincent
Victor
Rainbow
Jackie [Interpol / Aoi's undercover agent]
Purple [Aoi's assassin]
Yan
Ben [Interpol]
Aoi's enforcer / Interpol undercover
Do Min-shui, Molly's companion