Do-Young and Ha-Rin had known each other since they were in middle school. They had already decided that they were meant for each other and they had their whole lives planned out. Until their third year of college comes around and suddenly, they have a little boy named Heeseung, followed by Jay and the twins, Jake and Sunghoon, and Sunoo and Jungwon and Niki. And then their whole life plan has been thrown off course and they are having to learn how to manage with their new normal.