It opens with a man named Changcai, covered in blood, hiding somewhere, trying to escape a butcher trying to cut off his ear.At the same time, a roulette wheel spins and three results appear - the name of the victim, the cut ear, and a reward.The attacker appears to be Chang Cai's friend and was forced to complete the task for money.Baek Joong-sik (played by Zhao Zhenxiong) is a police detective who pursues the scammer after being deceived.He and his wife were worried about losing their house to fraud.Zhongzhi failed to get a loan at the police station. He received an emergency call from the hospital and found an injured patient Changcai.Changcai's ear was cut off, and police saw the man who put him down holding the ear on CCTV.
Zhongzhi and Park Eunjing found the situation strange, but Zhongzhi wanted to avoid the case.The boss forces him to investigate.As a result, Zhongzhi came to the house of the butcher who cut off Changcai's ear and found that the butcher fell and died during the chase.Before meeting the criminals, police found a marked bag.During the chase, the Butcher fell and died.Later, he returned home, opened the car and found the bag.He opened it and there was a large amount of money inside.Meanwhile, Changcai returns to the butcher’s house to look for the bag.Through CCTV, I learned that the police had stolen it.The next morning, Zhongzhi's wife was very happy to see the money.To avoid raising suspicion, the police declared the perpetrator dead and closed the case.Soon after, Eun-jung tells the police that Chang-jae has disappeared from the hospital, and Joong-sik successfully convinces the junior police officer not to investigate.
Jung-sik realizes there may be trouble and discovers that the money comes from a dangerous online game called Roulette.A man wearing a mask spins a roulette wheel to assign tasks during the live broadcast, and when completed, he receives a huge bonus.The police decided to catch the man.On his instructions, police came to the stadium and he launched balloons into the stadium.In the chaos, Zhongzhi tried to take the lead.After the balloons burst and cash spilled out, the masked man went live again after the chaos subsided.The next target is Jin Guohao, who will be released from prison in three days and the reward is 20 billion won.