Munhee, his only sister, and Dongmin, who grew up as an orphan, strive to forge their own paths and excel in their studies. One day, Munhee suffers a heartbreak from Taejin and takes a long time to recover. Meanwhile, Dongmin starts dating Hyemi, a dance student, but soon discovers that she is Taejin's sister. Dongmin hurts Hyemi, just as Taejin hurt his sister, and then disappears. Hyemi, unable to forget Dongmin, sets out to find him. When she finds him, Dongmin realizes he cannot give up on love. They forgive each other and promise their love again.