Ling Yao is cooped up in his room. When Tang Momo sets him free, he kisses her. Unexpectedly, Ling Yao becomes her roomie, and a fight between them starts. Ling Yao stops Momo falling in love with her Prince Charming. Tang Momo claims that Yao is fickle in love. They fight. They love. But in this fight, what’s the prize for the winner? What’s the punishment for the loser? What’s the secret behind?