The series was based on the Naverwebtoon series Do it one more time (Korean: 한번 더 해요; RR: Hanbon deo haeyo) by Hong Seung-pyo (aka Miti) and Kim Hye-yeon (aka Gugu), which was first published online in 2016.[1][4][5]
Choi Ban-do (Son Ho-jun) and Ma Jin-joo (Jang Na-ra) are both 38 years old and married with a little son. Both are struggling through daily lives that leave them exhausted and unhappy. Ban-do is a pharmaceutical salesman who spends his days begging people to buy his medicines and his evenings either drinking with prospective clients or helping an arrogant and cruel hospital director, Park Hyun-suk (Im Ji-kyu), to hide the fact that he is cheating on his wealthy wife. Jin-joo is a housewife who raises their son while struggling to find meaning in her life and feels lonely and abandoned by Ban-do. After coming to a breaking point in their relationship, Ban-do and Jin-joo wake up to find themselves as 20-year-old university students. They don't know why they are there or how long they will stay so they decide to enjoy it and make different choices than they did the first time around. These decisions impact their families and friends.[6]
They are married that they want to be divorced and go back to their teenager times.
A pharmaceutical salesman and Ma Jin-joo's husband. He was a Civil Engineering department student at Hankook University. However, after he graduated and got married, he started working as a pharmaceutical salesman, begging doctors and directors to buy his products, even willing to spend more money for his clients at bar, do menial jobs, even be bullied by them. Furthermore, one of his cruel clients pays him to hide his younger nurse from his wife by using credit cards under his name, with various hotel and motel listed on the bill. One day, he felt exhausted from the cruel treatments from his client and consistent naggings from Jin-joo. He agreed to his wife's divorce plea and wishing that they never met each other.
A homemaker and Choi Ban-do's wife for more than 10 years. She was a History department student at Hankook University. She is used to being germophobic but after becoming a homemaker, her hygiene deteriorated to the extent of willing to eat her son's food that he can't bite, wearing stained outfits most of the time and becoming gluttonous, eating at a faster pace than usual people. At first, she was happy with the marriage but some years later she feels exhausted and unhappy with her situation of being a homemaker, wishing herself to have a better job and income. She also feels that Ban-do starts abandoning her in term of affection and finances, believing that he is a cheap person. After a misunderstanding at a night, she wishes to go back in time when she didn't meet him and file for a divorce against Ban-do while demanding alimony for her and her son, Seo-jin.
Ban-do's classmate in the civil engineering department. A man with a bright and charming personality and great hair who is called naive and a little dumb.
Ban-do's senior at university at Medicine department. In the present, he is the director of a hospital. A very cruel person, he used to use innocent look to cheat on his girlfriend (and in present, is his wife) that he loves only for her family's wealthy background to date a lot of women. He keeps doing his old habit in the present, seducing younger and prettier nurses even using Choi Ban-do's credit card name to hide his mistresses at hotels and motels.
The drama, directed and written by the production team of The Sound of Your Heart,[2] is the first production of Zium Content, the production company founded by ex-KBS drama producer Han Seok-won (Hwarang: The Poet Warrior Youth) in early 2017. It was co-produced by KBS N.[11]
The soundtrack released on November 20, 2017 for the korean drama of the same name. The CD 1 composed of 7 tracks which was released as a single while the CD 2 released as a track on the album.[12]
In Philippines, the series was aired on ABS-CBN from June 11 to July 20, 2018, under the title Go Back Couple. It was also re-aired on the now-defunct Asianovela Channel on December 24, 2018. From October 19 to November 27, 2020, it re-aired on The Filipino Channel in the US, Canada, Europe, Middle East and Australia. It also aired on Kapamilya Channel from December 14, 2020 to February 5, 2021.
In Malaysia and Singapore, it was aired on TVN (Asia) from November 6 to December 12, 2018.
In Hong Kong, the series was aired on TVB J2 on August 9, 2018.
In Taiwan, it was aired on Star Chinese Channel on July 2, 2018.