My Perfect Stranger

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

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

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

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

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

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