心地善良的母亲（全度妍 饰）奋力应对竞争激烈的补习班界，帮助女儿（卢允瑞 饰）挤进一位数学名师（郑敬淏 饰）的课堂。

26-year-old Yong-jun (Hong Kyung) is troubled by his lack of dreams when he falls for the same-age Y