Wang Qiang (Xing Yuanyuan), the most naughty “scumbag” in the third class of junior high school, and Shi Miona (Wang Bowen), a cranky homeroom teacher, accidentally swap bodies. Wang, who had been oppressed for a long time, got a taste of being a homeroom teacher, and Shi also experienced the feeling of being considered the “school scum”. As the date of Shi’s open class competition is approaching, the two urgently need to find a way to change back into their bodies. But first, they’ll have to overcome numerous obstacles…

Sixteen-year-old Diane exists exclusively through her mother's gaze. But this intensely close bond between Diane and her mother, Sophie, is becoming increasingly problematic for the teenager. At high school, she would like to be loved like she is at home and expresses it in an awkward way like when she exchanges a favor for a look, in the toilets. A loudmouth, provocative, and seeking attention, Diane tries to stand apart from her mother and wishes, during a weekend, to live like an adult.

Lin Qin Nian tries to distance himself from Li Guang as feelings complicate their friendship, but the looming college exam might change their paths forever.