Yoo Eun Ho Son Yeh Jin, an instructor at a fitness club divorced her husband Lee Dong Jin Kam Woo Sung after the death of their new born baby as she blamed him for not being there for her when she needed him most. They remained friends after the divorce and met regularly. Even though both started seeing other people, they still had great feelings towards each other. With the help of Yoo Eun Ho's sister Yoo Ji Ho Lee Ha Na and Lee Dong Jin's friend, Dr. Gong Joon Pyo Gong Hyeong Jin, they finally realized that they should get back together.

描写的是一对二十多岁的离婚夫妇刘恩镐和李东振，在他俩分手以后，仍然放不下爱情之线的浪漫爱情剧。剧中的女主人公恩镐在高中时期当过游泳选手，并曾在比赛中获过奖。她在体育大学毕业后，在体育中心当教练。偶然的机会在书店里遇见东振，与他坠入了爱河并且结婚，可是他俩结婚两年就分手了。男主人公东振在书店里工作，是喜欢看书的人。虽然他是在工作方面很冷静的一个人，但在恋爱方面却很软弱。他们分手后，爱情并没有结束。他们仍然深爱着对方，互相给对方介绍异性朋友，或者在他们曾经谈恋爱时约会的地方见面，干涉各自的私生活，为此争吵不断，可是俩人的缘分却也无法扯断。