MuMu discovers her husband cheats on her with another lady. She tries to save her marriage but the situation is more complicated than she thought. She invites the strange lady to meet in cafe to negotiate. However, beyond her expectations, the conversation with the lady brings her back to her college memories over and over again. Ten years before, Hu Yao was obsessed with MuMu. Because of his obsessed and even insane love, MuMu didn't know how to respond and chose to ignore him. But MuMu's attitude of love damaged Hu Yao's world. Finally, when Hu Yao confronted a dramatic strike from MuMu his love to MuMu turned dark. He decided to utilize an extreme way to take revenge.