Mengyi and Yiqing were childhood sweethearts. However, that year, Yiqing disappeared inexplicably, but they still had an agreement. Mengyi became ill because of this and went to college a year late. So, I don't know if Yiqing has kept the agreement. When he found him, everything changed. At this time, another boy entered Mengyi's world to protect her. However, he is Yiqing's younger brother. Is this possible? In the end, Mengyi decided to study in South Korea. A devil appeared. Yu Fan, after experiencing so much, who is the prince charming in his heart, and what was the original secret!