Qin Zhizhi originally thought that she had a happy family, and the most important thing was that she had a sister who loved her. But all this changed after she turned eighteen. She became Cain, the King of Vampires, and was about to embark on a road of unremitting efforts to restore her strength. What will she encounter on this road? How will all the entanglements of the previous life be played out in this life?