Based on the popular manga, Oh Ha-ni is a clumsy student who falls for the perfectionist, Baek Seung-jo. However, Seung-jo is indifferent towards her and rejects her love. When Ha-ni's house collapses, she and her father moves into his long-time friend's house. It turns out that Seung-jo is the friend's son and Ha-ni is given the opportunity to be near the guy she loves. Will she be able to move Seung-jo's heart?