Three years ago, the surging police were active in various social strata. But one day three years ago, with the disappearance of the famous detective Dong Ye, the police suddenly disappeared from the world. Dong Ying, Dong Ye's younger sister, is persistently looking for her brother Dong Ye. Three years later, strange events continue to occur, unraveling the reasons for her disappearance three years ago. The truth that comes to light tests friendship and love. Thank you, fate, for allowing you and me to meet. Good night, □□.