Goodbye 2021, Hello 1987
E1
Hae-jun discovers a time machine while Yoon-young struggles with her busy job until tragedy strikes.
The Reason We Can't Return
E2
Yoon-young thinks that it could be a good thing that she somehow ended up in 1987 and met Soon-ae.
The Secret You Have
E3
Yoon-young joins Soon-ae's class as planned, but a sudden twist drastically disrupts everything.
All This Is a Coincidence?
E4
Hae-jun's expectations are challenged as events unfold, until a student teacher enters the scene.
A Certain Confession
E5
Yoon-young's choice to withhold the specifics of her reasons for staying might have been an error.
Lie After Lie
E6
Despite Hae-jun's confidence in his thorough preparations, it turns out they are insufficient.
An Overlapped Path
E7
Hae-jun and Yoon-young find relief, but their narrow focus may lead to unforeseen consequences.
The Turning Point
E8
The truth dawns on Hae-jun and Yoon-young that they are bound by certain inescapable factors.
Me in Your Darkest Night
E9
Despite grappling with the grief of her sister's death, Soon-ae's primary concern lies with Hee-sub.
Far or Close
E10
With an awareness of how small details can alter everything, Hae-jun directs his attention to Hae-kyung.
Women Who Read Are Dangerous
E11
Not all women who read are dangerous, but the ones around Soon-ae might be a little too dangerous.
A Man Who Doesn't Exist
E12
The complexity of the case deepens as Hae-jun and Yoon-young investigate, causing confusion to mount.
Time Flies, Love Remains
E13
Hae-jun is caught in an unfortunate coincidence, with everything pointing to him as the murderer.
Meeting You Will Bring Me Joy
E14
Hae-jun realizes that investigating the case might have affected someone very close to him.
The Reason You Can't Leave
E15
Looking into the eyes of the culprit who stands staring down at Hae-jun leaves him speechless.
My Perfect Stranger
E16
Farewells exchanged, Yoon-young and Hae-jun journey to meet them again on the other side of the timeline.