Teacher, I fell in love with you.

Yeo-ju, who is assigned to a school for the first time, and Jeon Jung-kook, a troublemaker in Class 2, Grade 1. Jung-kook falls for his new teacher. At first, he follows him around as a nuisance, but at other times, he becomes aggressive. Yeo-ju develops feelings for him. A sweet, affectionate, and powerful romance begins between them.