Before coming to Korea, Mingxun never thought that he would become a killer. Mingxun was born in North Korea with a golden spoon. Mingxun's family was very rich when he was young. His dream is to become a pianist. After his father failed in a mission, his dream came to nothing. In order to keep his sister safe, he pretended to be Jiang Dahao, a defector, and went to South Korea to become a killer. He was studying in a high school in South Korea, and his tutor arranged for him to sit next to his female classmate Huiyin, and then knew that she had the same name as her younger sister and became her friend. When Mingxun returned to his room, he found that there was a mobile phone in the parcel. Wen Shangzhe wanted to help Mingxun give Beidouxing a lesson. Mingxun first went to the Lezuo shop to get the number to call, and then went to the cake shop to pick up the pistol and bullets in the cake. Mingxun arrived at the house. After the white-headed boxing classroom, I found the fat man and started fighting. Mingxun pointed the gun at the fat man and asked where the Big Dipper was. After that, the fat man did fight back and finally Mingxun kicked the fat man to death. The next day Mingxun came to the pork factory owner to write the license plate number and then began to scuffle Mingxun or successfully stabbed the pork factory owner. Mingxun found the Beidouxing license plate number the next morning. While waiting for the traffic light, Mingxun took out his gun and shot the Beidouxing car and then shot the Beidouxing tire. It’s out of control and skidding. At this time, the Big Dipper is injured. Mingxun has to let go of the Big Dipper. Mingxun sees Huiyin being bullied by his classmates. Mingxun starts beating his classmates. At this time, the classmates sprained Huiyin and went to work as a dancer after leaving school. The adoptive father and adoptive mother were shot and killed by the Big Dipper. Mingxun used the Big Dipper to fight martial arts. Finally, Mingxun successfully killed the Big Dipper. Then Mingxun used a knife to cut off the gas line and then put the knife in the microwave. Mingxun packed the clothes and left the adoptive mother drugstore. My grandma, Tan Myung Hoon, who came to the night market, sat in a coma after a short time. My grandmother had to take in Myung Hoon. After the mission was completed, she could finally return to North Korea to see her sister.