During the Republic of China era, Shanghai Dayuan Bank was robbed by four bandits. The boss behind the bank, Yan Dashuai, ordered to dig three feet underground and recover the money. At this moment, the brothers and sisters of Long Yijin, who are making a living by performing on the streets, and the mysteriousThe female detective Eileen met the dying bank robber Iron Tiger. Iron Tiger claimed to have been betrayed by his own people. Before his death, he took out a key and told the three of them to search for the head of the Hu family theater troupe. Three people begging for a bounty, determinedWe are determined to work together, but the pursuit of General Yan and his son Yan Shao, the capture of Captain Hu, and even the mysterious identity of Eileen have put them in a dangerous situation.