Su Yu traveled to the world of beast control, but failed in the awakening ceremony and became an ordinary person. After her girlfriend Jiang Ying awakened to her A-level talent, she broke up with her on the grounds that she "didn't want to marry an ordinary person" and turned to someone else. Frustrated, Su Yu came across Aaliya, who was covered in bruises and beautiful face, in the alleyway home, and was bitten by her when he came to help. At a critical moment, Su Yu activates the Yushen system - it turns out that Arya is the campus beauty of Yuling University in the Magic City, and her real body is the Vampire Queen. Due to an accident, her level plummeted and she was seriously injured. Su Yu was the first man she sucked blood, and the two automatically entered into a life-and-death contract.
