Air date: 2023-05-01

Runtime: 66 min

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

Air date: 2023-05-02

Runtime: 67 min

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

Air date: 2023-05-08

Runtime: 63 min

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

Air date: 2023-05-09

Runtime: 60 min

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

Air date: 2023-05-15

Runtime: 61 min

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

Air date: 2023-05-16

Runtime: 61 min

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

Air date: 2023-05-22

Runtime: 60 min

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

Air date: 2023-05-23

Runtime: 62 min

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

Air date: 2023-05-29

Runtime: 59 min

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

Air date: 2023-05-30

Runtime: 60 min

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

Air date: 2023-06-05

Runtime: 61 min

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

Air date: 2023-06-06

Runtime: 63 min

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

Air date: 2023-06-12

Runtime: 63 min

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

Air date: 2023-06-13

Runtime: 63 min

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

Air date: 2023-06-19

Runtime: 61 min

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

Air date: 2023-06-20

Runtime: 63 min

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