Season 1

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  9.0/1038 votes

  Goodbye 2021, Hello 1987

  Season 1 Episode 1 - Aired 5/1/2023

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

  Director: N/A

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  8.4/1026 votes

  The Reason We Can't Return

  Season 1 Episode 2 - Aired 5/2/2023

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

  Director: N/A

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  8.2/1027 votes

  The Secret You Have

  Season 1 Episode 3 - Aired 5/8/2023

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

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  8.6/1024 votes

  All This Is a Coincidence?

  Season 1 Episode 4 - Aired 5/9/2023

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

  Director: N/A

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  8.5/1025 votes

  A Certain Confession

  Season 1 Episode 5 - Aired 5/15/2023

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

  Director: N/A

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  8.4/1024 votes

  Lie After Lie

  Season 1 Episode 6 - Aired 5/16/2023

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

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  8.0/1023 votes

  An Overlapped Path

  Season 1 Episode 7 - Aired 5/22/2023

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

  Director: N/A

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  8.0/1023 votes

  The Turning Point

  Season 1 Episode 8 - Aired 5/23/2023

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

  Director: N/A

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  8.5/1029 votes

  Me in Your Darkest Night

  Season 1 Episode 9 - Aired 5/29/2023

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

  Director: N/A

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  8.9/1026 votes

  Far or Close

  Season 1 Episode 10 - Aired 5/30/2023

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

  Director: N/A

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  8.5/1023 votes

  Women Who Read Are Dangerous

  Season 1 Episode 11 - Aired 6/5/2023

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

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  8.4/1024 votes

  A Man Who Doesn't Exist

  Season 1 Episode 12 - Aired 6/6/2023

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

  Director: N/A

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  8.7/1024 votes

  Time Flies, Love Remains

  Season 1 Episode 13 - Aired 6/12/2023

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

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  8.8/1023 votes

  Meeting You Will Bring Me Joy

  Season 1 Episode 14 - Aired 6/13/2023

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

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  8.1/1022 votes

  The Reason You Can't Leave

  Season 1 Episode 15 - Aired 6/19/2023

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

  Director: N/A

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  8.9/1031 votes

  My Perfect Stranger

  Season 1 Episode 16 - Aired 6/20/2023

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

  Director: N/A

  Writer: N/A