Go Back Couple

Jin Joo and Ban Do met when they were 20 and got married when they were 24. 18 years later, Jin Joo is exhausted from taking care of their child alone, and Ban Do is exhausted from work. They can't understand one another and decide to get a divorce. On the day that they decide to end their 18 years of marriage, something strange happens to them.

Ban Do and Jin Joo return to the year they were 20. Unfortunately, they face the worst day of both their lives. They are both excited to return to their college years, but that excitement turns out to be temporary. They meet at an unexpected place only to be reminded of the events that occurred that day.