Qi Xuan, a 17-year-old high school student. In his dreams, a man in black clothes often appears, standing under a streetlight. He is extremely handsome. But when Qi Xuan heard the name of the man in black, he fainted. Who is this man, and what is his relationship with Qi Xuan? The grievances and hatreds of 500 years ago in the three realms of the human world, the underworld (the underworld) and the heaven begin to unfold. What kind of ending is waiting for Qi Xuan?