Go Back Couple

College sweethearts Choi Ban Do (Son Ho Jun) and Ma Jin Joo (Jang Na Ra) have been married for 18 years and have a son together. However, their relationship has reached a breaking point: Ban Do, a pharmaceutical salesman, is often away from home for work as he tries to make client and business connections, while Jin Joo feels abandoned as she stays at home with their son. Exhausted and at the end of their patience, they decide to divorce – but the next morning, they wake up and find themselves back in college! With no idea how they got there or how they’ll return back to their regular lives, Ban Do and Jin Joo decide to take advantage of their second chance and make different choices. Will they find a way to heal their existing relationship, or will they decide to take an entirely different path?