On the hottest day in 50 years, a serious fire incident happened to a busy commercial tower, a gaggle of fire fighters with an indestructible enthusiasm are going to save lives.
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.
An archeologist noticed that the texture of the relics discovered during the excavation of a glacier closely resembled a jade pendant seen in one of his dreams. He and his team then embark on an expedition into the depths of the glacier.
