The film focuses on the legendary "Trident" combination of the police - "Big Back Hair" Cui Tiejun (played by Huang Zhizhong), "Big Stick" Xu Guozhu (played by Jiang Wu), and "Big Sprayer" Pan Jianghai (played by Guo Tao). As the three veteran police officers are approaching retirement, they are accidentally involved in a thrilling huge financial case! The mastermind behind the scenes attempts to unfreeze billions of assets and does not hesitate to hire underworld forces to use extreme means to launder money. Behind everything is a more intricate network of crimes and personal connections. Faced with the temptations and difficulties of opponents, can the "Trident" remain firm in their beliefs, work together to crack the case, and bring the criminals to justice?