Chulsoo is a punk kid who always plays tricks on others. One day, while he is picking on somebody as usual, he meets Younghee, a new transfer student, who becomes his class partner. He starts to like her. Younghee is a precocious smart girl who lives with her grandmother alone. Her grandmother owns a flower shop and she helps her grandma by delivering flowers. Though Younghee looks lively, she misses her deceased parents at heart.