E1 - Goodbye 2021, Hello 1987

Aired: May 01, 2023

Hae-jun discovers a time machine while Yoon-young struggles with her busy job until tragedy strikes.

E2 - The Reason We Can't Return

Aired: May 02, 2023

Yoon-young thinks that it could be a good thing that she somehow ended up in 1987 and met Soon-ae.

E3 - The Secret You Have

Aired: May 08, 2023

Yoon-young joins Soon-ae's class as planned, but a sudden twist drastically disrupts everything.

E4 - All This Is a Coincidence?

Aired: May 09, 2023

Hae-jun's expectations are challenged as events unfold, until a student teacher enters the scene.

E5 - A Certain Confession

Aired: May 15, 2023

Yoon-young's choice to withhold the specifics of her reasons for staying might have been an error.

E6 - Lie After Lie

Aired: May 16, 2023

Despite Hae-jun's confidence in his thorough preparations, it turns out they are insufficient.

E7 - An Overlapped Path

Aired: May 22, 2023

Hae-jun and Yoon-young find relief, but their narrow focus may lead to unforeseen consequences.

E8 - The Turning Point

Aired: May 23, 2023

The truth dawns on Hae-jun and Yoon-young that they are bound by certain inescapable factors.

E9 - Me in Your Darkest Night

Aired: May 29, 2023

Despite grappling with the grief of her sister's death, Soon-ae's primary concern lies with Hee-sub.

E10 - Far or Close

Aired: May 30, 2023

With an awareness of how small details can alter everything, Hae-jun directs his attention to Hae-kyung.

E11 - Women Who Read Are Dangerous

Aired: June 05, 2023

Not all women who read are dangerous, but the ones around Soon-ae might be a little too dangerous.

E12 - A Man Who Doesn't Exist

Aired: June 06, 2023

The complexity of the case deepens as Hae-jun and Yoon-young investigate, causing confusion to mount.

E13 - Time Flies, Love Remains

Aired: June 12, 2023

Hae-jun is caught in an unfortunate coincidence, with everything pointing to him as the murderer.

E14 - Meeting You Will Bring Me Joy

Aired: June 13, 2023

Hae-jun realizes that investigating the case might have affected someone very close to him.

E15 - The Reason You Can't Leave

Aired: June 19, 2023

Looking into the eyes of the culprit who stands staring down at Hae-jun leaves him speechless.

E16 - My Perfect Stranger

Aired: June 20, 2023

Farewells exchanged, Yoon-young and Hae-jun journey to meet them again on the other side of the timeline.