In the eyes of the world, Sun Xiaohu is missing. In reality, he's a wandering spirit that can only appear to and interact with his twin brother, Sun Xiaotu. With his brother's help, Sun Xiaotu joins the police force in order to find out what really happened to his brother, but they soon discover they're just one part in a much bigger plot.
Chen Siyu
as Sun Xiaohu
赖宗赢
as Sun Xiaotu
张亚奇
as Bi An
