In elementary school, a young boy, Suh Joon-young (played by Kwon Sang-woo), meets a pretty little blind girl named Park Hae-in (played by Kim Hee Sun). At first, he seems to despise her, but as they become closer and closer they learn to fall in love with each other. Their childhood goes on and finishes in the first episode. Hae-in and Joon-young are always together, facing problems with Joon-young's mother, Hwa-jung, who won't stop trying to tear the two apart, for she likes Joon-young but he ignores her while Min-ho, who likes Hwa-jung, hates and detests Joon-young. Later on, they are separated even further under unfair consequences and just as they reunite after maybe a month or two, Hae-in moves to New York with her aunt and her new uncle. But luck is still not with them because of the uncle, Hwa-jung's ability to intercept any messages between the two and the horrible lie that Hwa-jung weaves that Hae-in faces, making her face away slowly from Joon-young and falls in love with another, Lee Gun-woo and the he is Joon-young's best friend after their first bad meeting. Everything soon leads to shock, realization, heartbreak and in some ways, betrayal.