Episode 1 - Goodbye 2021, Hello 1987
May 1, 2023 • 66 minutes
Hae-jun discovers a time machine while Yoon-young struggles with her busy job until tragedy strikes.
Episode 2 - The Reason We Can't Return
May 2, 2023 • 67 minutes
Yoon-young thinks that it could be a good thing that she somehow ended up in 1987 and met Soon-ae.
Episode 3 - The Secret You Have
May 8, 2023 • 63 minutes
Yoon-young joins Soon-ae's class as planned, but a sudden twist drastically disrupts everything.
Episode 4 - All This Is a Coincidence?
May 9, 2023 • 60 minutes
Hae-jun's expectations are challenged as events unfold, until a student teacher enters the scene.
Episode 5 - A Certain Confession
May 15, 2023 • 61 minutes
Yoon-young's choice to withhold the specifics of her reasons for staying might have been an error.
Episode 6 - Lie After Lie
May 16, 2023 • 61 minutes
Despite Hae-jun's confidence in his thorough preparations, it turns out they are insufficient.
Episode 7 - An Overlapped Path
May 22, 2023 • 60 minutes
Hae-jun and Yoon-young find relief, but their narrow focus may lead to unforeseen consequences.
Episode 8 - The Turning Point
May 23, 2023 • 62 minutes
The truth dawns on Hae-jun and Yoon-young that they are bound by certain inescapable factors.
Episode 9 - Me in Your Darkest Night
May 29, 2023 • 59 minutes
Despite grappling with the grief of her sister's death, Soon-ae's primary concern lies with Hee-sub.
Episode 10 - Far or Close
May 30, 2023 • 60 minutes
With an awareness of how small details can alter everything, Hae-jun directs his attention to Hae-kyung.
Episode 11 - Women Who Read Are Dangerous
June 5, 2023 • 61 minutes
Not all women who read are dangerous, but the ones around Soon-ae might be a little too dangerous.
Episode 12 - A Man Who Doesn't Exist
June 6, 2023 • 63 minutes
The complexity of the case deepens as Hae-jun and Yoon-young investigate, causing confusion to mount.
Episode 13 - Time Flies, Love Remains
June 12, 2023 • 63 minutes
Hae-jun is caught in an unfortunate coincidence, with everything pointing to him as the murderer.
Episode 14 - Meeting You Will Bring Me Joy
June 13, 2023 • 63 minutes
Hae-jun realizes that investigating the case might have affected someone very close to him.
Episode 15 - The Reason You Can't Leave
June 19, 2023 • 61 minutes
Looking into the eyes of the culprit who stands staring down at Hae-jun leaves him speechless.
Episode 16 - My Perfect Stranger
June 20, 2023 • 63 minutes
Farewells exchanged, Yoon-young and Hae-jun journey to meet them again on the other side of the timeline.