Yoseob met Suzy in the Shopping Mall and fell in love with her. Gikwang fell in love with IU when they met in the park. Sunny is Gikwang's sister . Gikwang introduced his sister to Junhyung and he eventually fall in love with her. But , it's all complicated ! How will all this end ? Will they be together or will there be something that kept on bothering them ?