After waking up, Gu Yan, the tough guy and leader of Dorm 302, discovers that he has inexplicably turned from a real man into a girl! A mysterious woman named Fei Ye tells him that if he wants to change back, he must pass a test about "true love." Forced onto the path of romance, the sharp-tongued and hot-tempered Gu Yan embarks on a series of blind dates and dates, with his bros enthusiastically helping him along as one heart-fluttering moment follows another. Just when he finally thinks everything is about to return to normal, he discovers that the bizarre transformation hides a secret far more complicated than romance—and the real test has only just begun.