Sandara Park and her older brother Seunghyun, have an abusive father. One night her brother's best friend Jiyong, sees her crying and climbs through her bedroom window to comfort her. That one action sparks a love/hate relationship that spans over the next eight years.

Jiyong is now a confident, flirty player who has never had a girlfriend before.

Dara is still emotionally scarred from the abuse she suffered at the hands of her father.

Together they make an unlikely pair.

Their relationship has always been a rocky one, but what happens when Dara starts to view her brother's best friend a little differently?

And how will her brother, who has always been a little overprotective, react when he finds out that the pair are growing closer?