Happiness Does Not Come in Grades.

In a high school second grade classroom, Bonggu (Gyu Seok) and Genija (Choi Soo-hoon), whose grades are low, love each other (Yi Yeon Yeon) and Niho teacher. The hard - luck Changshu helps his mother to clean the liquor, but the Eun - joo, who grew up in a rich environment, screams without understanding him. Eunju is always attracted to the innocence of the pure mind while maintaining good grades and suffering obsession with the grades due to the obsession of the parents. She takes her parents' cold eyes when she is pushed to the seventh place by the next exam. Eunju can not endure it and suicide. In the classroom, a flower is placed on the desk of Eun-joo, and the hearse and the children are tears as the hearse runs the school.