Episode 1

Yoo So Joon can travel through time while riding the subway. In the future, he sees that his own death coincides with that of a former child actress. He intends to get to know her to find out if there is a way to avoid his own demise.

Episode 2

So Joon tries to figure out if there is a connection between himself and Ma Rin, but begins to find her personality overbearing and distasteful.

Episode 3

An article is written revealing Ma Rin was a survivor of the Namyeong Station accident. So Joon gets some advice from his fellow time traveler.

Episode 4

So Joon feels like his only chance at survival is marrying Ma Rin, but convincing her is harder than he imagines.

Episode 5

Ma Rin and So Joon start to adjust to their new lives, and So Joon discovers that something else in his fate has changed.

Episode 6

In an effort to determine why he has run away in the future, So Joon takes multiple trips in time to determine when exactly he leaves.

Episode 7

Ma Rin begins to seriously doubt the honesty of her husband, especially when Lee Gun Sook butts in.

Episode 8

So Joon opens up about his life and his parents, and tries to save his marriage.

Episode 9

The other time-traveler's identity and motive are revealed, but this only further complicates So Joon's life.

Episode 10

So Joon tries to stop a tragedy he knows will occur, but grabs the wrong culprit.

Episode 11

In the aftermath of So Joon's loss, he worries about what his new future will hold, and who else he will hurt.

Episode 12

Trying to protect Ma Rin from future harm, So Joon proposes that they spend some time apart.

Episode 13

So Joon promises not to go into the future anymore, but quicky regains the itch. Kim Yong Jin realizes he is in too deep, and can only get out by pushing further.

Episode 14

The truth about Ma Rin's father is revealed, and Yong Jin continues to cover his tracks.

Episode 15

So Joon sets off to confront Yong Jin, despite having seen how it will play out for him.

Episode 16

So Joon is lost in time, but Ma Rin doesn't give up hope that she will see him again.