When Yoo So-joon time travels while riding the subway, he sees a grim future that coincides with a former child actress.

Three months ahead, So-jun is astounded by his impending marriage to Marin, struggling to believe it's real.

An article is written revealing Ma-rin was a survivor of the Namyeong Station accident; Yoo So-joon gets some advice from his fellow time traveller.

Yoo So-joon feels like his only chance at survival is marrying Ma-rin, but convincing her is harder than he imagines.

Ma-rin and Yoo So-joon start to adjust to their new lives; Yoo So-joon discovers that something else in his fate has changed.

So-jun is nervous that Marin will find out he's a time traveler.