Aboard a falling plane as the clock ticks toward doom, Han Tae-sul puts his mind to work for a solution; Gang Seo-hae arrives in the year 2020.

The contents of a mysterious suitcase give Tae-sul more questions than answers; in exchange for lottery numbers, Sun agrees to help Seo-hae.

Tae-sul's presentation at a conference is interrupted; He and Seo-hae make a narrow escape, but more trouble follows.

On the run from the enforcement agency, Tae-sul and Seo-hae give in to the time traveler's request that they make a stop at his mother's house.

Caught by Kim Seo-jin trespassing in her clinic, Tae-sul tries to explain what's going on; Seo-hae reveals disturbing details about the future.

Sao-hae infiltrates Eddy Kim's party with a mission; after a series of distressing events, Tae-sul realizes he cannot trust everyone around him.