Yujeong, who works as a night shift nurse at a general hospital's cardiology department, is now told that her 12th-grade younger sister, Kijeong,

　　讲述在艺术高中相遇的童星出身雪儿（韩韶禧 饰）和演员练习生秀安（韩海印 饰）之间积累友情与爱情的关系，互相依靠然后分手最终重新寻找对方的故事。