Satan, the devil king of the demon world, selected one of his 29 children to be the next devil king. As the youngest son, Hao reluctantly participated in this survival game. The location is a different world, that is, the human world, and the time limit is 4 years. After 4 years, Satan will give the final test. Hao signed a contract with a human named Qin Xiaochen, and Xiaochen became Hao's slave. Is the contract a snap? No kidding! Who wants to have sex with you? Stupid Xiaochen! In this way, Hao and Xiaochen's warm life in another world begins