Yu Mangmang is gonna be a senior college student but she still has no boyfriend. The reason is that she has been haunted by rumors since she was a high school student. As such, she's got zero friends in college. However, on the interview day, she somehow bumped into the best-looking guy in her university, Lin You. What terrifies her most was that he was going to move into her house! Living under the same roof, he slowly started to reveal his true "evil" face...