Yi Hua, an aged female doctor, meets Ye Xiang, who's injured and unconscious from an accident. Out of a doctor's benevolence, she takes him back for treatment. However, Ye Xiang loses his memory due to injury. At the same time, he has a tendency of split personality, thus he becomes changeable, sometimes he's sweet but sometimes grumpy. Yi Hua takes him as a medicine boy, calling him "Yun Gui". While getting to know each other gradually, Yun Gui began to launch a fierce love offensive at Yi Hua.