This is a story about secrets. Duan Bowen, seventeen years old, lost his mother when he was young and had great conflicts with his stepmother. In the sky, he met "Little Ear" and fell in love with this "young, beautiful and distinguished" teacher. This is his biggest secret. But he didn't know that he discovered that Yu Chizi liked him - this was also Yu Chizi's secret. In her sophomore year of high school, Yu Chizi discovered that her friend Scarlett actually had an unusual relationship with Duan Bowen, and she also discovered Scarlett's secret. As a result, Yu Chizi carefully designed a plan to retaliate against Scarlett, and the plan was very successful, but the result was something she did not expect. The truth of the matter surprised her again.