The neighbor boy Si Yucheng and the ballet girl Jiang Luo grow up together. The boy has a strict exterior, quietly urging the playful and lazy Jiang Luo to work hard and catch up in her studies, hiding his deep feelings within their daily companionship, quietly waiting for the girl to slowly grow up. Bending over desks to solve problems in the classroom, dancing gracefully on stage, and then walking shoulder-to-shoulder in foreign mountains and fields, their bickering youthful days write a tender and beautiful youth bond.