This book is a story based on the love between humans and ghosts. In the story, the protagonist Xia Shengyan is an optimistic, strong girl who longs for true love and hates third parties. But unfortunately, her best friend Zhao Xiaotian fought for her love, and Li Ao and her could not be together. Later, after the pregnant Zhao Xiaotian committed suicide, she was haunted by resentment. He also stated that if everyone was to be killed, Sheng Yan must die... Just when Sheng Yan was about to be killed by the female ghost Xiaotian, a mysterious power saved her. That power was both cold and warm, neither human nor divine. He was a handsome male ghost... Later, because of him, Sheng Yan recovered her memory. It turned out that she and he had been in love, but he died due to a disaster. When he was dying, he said to her: "Let me protect you forever..."