Hai Xinyin is a sophomore in high school who lives in a difficult family. By chance, she becomes a Spirit Slayer with supernatural powers. What's even more incredible is that the handsome guy with long hair actually comes from the senior brother who helped her complete the task entrusted to her in her previous life four hundred years ago! So, what will be the future of the undead princess Mengluo who is wandering in the world, the unruly rich girl Tong Shu, the handsome and kind-hearted teacher Ouyang and the two of them? However, this novel not only tells about fantasy and love, but also about Hai Xinyin's choice of fate and perception of life in a difficult period of life.