Zhou Xiao (Liu Renyu) is a cute girl with a detective brain. She always likes to write some detective stories and publish them anonymously on the Internet, so she has gained a lot of fame. On the way to Southern University, Zhou Xiao got lost, which caused a lot of trouble to Zhao Fanzhou (Gong Jun), the senior who was in charge of picking her up. In Zhao Fanzhou's mind, Zhou Xiao is an out-and-out accident maker. Who knew that Zhao Fanzhou had just breathed a sigh of relief for finally getting rid of Zhou Xiao's burden, and the two were forced to be tied together because of the reasoning club. As time went on, Zhou Xiao's upright character gradually made Zhao Fanzhou unable to help but cast his eyes on her. Even if Zhou Xiao was dull, she could not help but notice the heat in Zhao Fanzhou's eyes when he looked at her. At this time, the intervention of a boy named Cai Yasi (Li Geyang) catalyzed the stagnant relationship between the two.