A chauvinistic man and the first-in-line heir to a vampire clan, Ouyang Chen, discovers that an ordinary human girl, Ye Ziqi, can heal his wounds. As a result, he shamelessly moves into her house and refuses to leave, causing chaos and turmoil for Ziqi at school. To compensate her, Ouyang Chen becomes her protector.

With the effortlessly cool and invincible Ouyang Chen by her side, Ye Ziqi instantly becomes the public enemy of all the other girls at school. However, their cheerful days are short-lived. The second-in-line heir, Ouyang Chen’s younger brother, learns that his competitor sibling is still alive. He then leads his subordinates to infiltrate the school, planning to capture both Ouyang Chen and Ye Ziqi in one fell swoop…