The earth is irregular day and night, and shadows are frequent. Li Qingqing, a girl who lost her memory in a car accident, and her cousin Li Wangchuan depend on each other. Until one day, a mysterious girl Ning Qingqing appears and breaks all this. She tells her that by retrieving the book of life and death with her, she can regain her memory. "Cousin" Li Wangchuan also disappeared. What secret is hidden in Li Qingqing's body? Why did Li Wangchuan disappear? What is Ning Qingqing's purpose of approaching her? Why does the earth's day and night change?
Intention: Life and death are determined and cannot be changed.