Lao San (Liu Ye) was originally a promising naval soldier, but he accidentally damaged his brain nerves while saving someone and had to retire early. After retiring, Lao San has always lived a self-entertaining military life, and he has taken it as his duty to be brave and eliminate all evil forces. Years of military life and unremitting training have made Lao San invincible in his fights with thieves, ticket scalpers, and criminal gangs. On the other hand, Hong Kong gangster A Long (Anthony Wong) quietly came to the city where Lao San was with his wife and men. Their goal was the Song Dynasty cultural relic Yue Jia Qiang that was about to be exhibited here. Criminal police captain Lao Jiang (You Yong) has secretly set his sights on this gang force, but he didn't want Lao San to join the game with a full sense of justice and a not-so-brilliant mind. A head-on three-way showdown between justice and evil kicked off.