Season 1
Cha Ju-hyeok works at a bank and has been married to Seo U-jin for five years. When a strange incident happens one day, Ju-hyeok makes a decision that impacts his life and those around him in unexpected ways. Suddenly, the life he had with U-jin and his best friend, Yun Jong-hu, is gone, and he is leading a very different life. How will his first love, Lee Hye-won, factor into his new life? And will it be possible to get his old life back?
All Episodes
Episode 1
Episode 1
August 1, 2018
Cha Ju-hyeok and Seo U-jin lead an unhappy marriage as busy working parents. One day, Ju-hyeok is handed something special.
Episode 2
Episode 2
August 2, 2018
Ju-hyeok secretly buys a new video game console knowing that he's dead if U-jin finds out. Later, he returns to the mysterious toll booth.
Episode 3
Episode 3
August 8, 2018
Ju-hyeok wakes up in a different house and lying next to a different wife. U-jin picks up a stranger's phone and tries to return it.
Episode 4
Episode 4
August 9, 2018
When U-jin begins her new job at the bank, Ju-hyeok tries to have her transfer to another branch. Lee Hye-won's behavior upsets Ju-hyeok's parents.
Episode 5
Episode 5
August 15, 2018
Meeting U-jin's mother startles Ju-hyeok, who finally learns about her condition. At the bank, U-jin is put in a potentially dangerous situation.
Episode 6
Episode 6
August 16, 2018
After confessing his feelings to U-jin, Yun Jong-hu volunteers to join her on an overnight work trip. Horrified, Ju-hyeok follows them.
Episode 7
Episode 7
August 22, 2018
A surprise visitor comes to the bank looking for Ju-hyeok. The three friends agree to go on a getaway together with their partners.
Episode 8
Episode 8
August 23, 2018
Ju-hyeok wants to return to the way it was, but it may be too late. When her mother goes missing, U-jin is overcome with worry.
Episode 9
Episode 9
August 29, 2018
Finding out about Ju-hyeok's lie infuriates Hye-won. Meanwhile, a malevolent post is written about U-jin on an online community.
Episode 10
Episode 10
August 30, 2018
After a fight with Ju-hyeok, Hye-won takes drastic action. U-jin and Jong-hu's co-workers find out about their relationship.
Episode 11
Episode 11
September 5, 2018
U-jin has something to say to Jong-hu, who later overhears a conversation that stuns him. Hye-won sees the real Jung Hyeon-su.
Episode 12
Episode 12
September 6, 2018
The truth about her unusual connection with Ju-hyeok becomes clear to U-jin. At work, a sudden emergency places Ju-hyeok at risk of losing his job.
Episode 13
Episode 13
September 11, 2018
Finding himself back in 2006, Ju-hyeok tries all he can to avoid U-jin. When they wake up in the present, life has changed again.
Episode 14
Episode 14
September 12, 2018
To Ju-hyeok's distress, U-jin returns to the bank. While she wants to make things work, he remains adamant about pushing her away.
Episode 15
Episode 15
September 19, 2018
While sneaking around their co-workers on a date, U-jin runs into her charming first love from her university days and makes Ju-hyeok jealous.
Episode 16
Episode 16
September 20, 2018
Three years later, Ju-hyeok and U-jin have come full circle — with revisions. Hye-won shows up at a university club reunion.