The Bank of Korea was robbed of 5 billion by a five-member fraud gang. However, one member of the criminal gang died and one was arrested at the scene of the crime. Detective Jin (played by Qian Haozhen) was in charge of the case. He quickly launched an investigation and pursuit of the other three people, and the case gradually surfaced... Cai Changhe (played by Park Xinyang), who had just been released from prison, planned to use bank checks to withdraw a huge amount of money from the Bank of Korea. For this purpose, he found Mr. Jin (played by Bai Yunzhi), a veteran fraudster. Mr. Jin's gang had used a trick to make two teachers lose their fortunes and ruin their reputation four years ago. Mr. Jin, who didn't want to make another move, was moved by Changhe's plan and found his old partner, the fraudster "Big Mouth" and the violent "Swallow", as well as the master of counterfeiting bills "Gasoline". The five-member gang was officially formed. Mr. Jin's mistress Xu Renjing (played by Lian Jingya) fell in love with Changhe after a long time of contact, and the two were ambiguous under Mr. Jin's nose. After Chang He died at the crime scene, Xu Renjing moved into the bookstore of Chang He's brother Chang Hu, and it was unknown what his intentions were. The reason why the robbery failed was shocking...