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An unfathomable incident introduces a genius engineer to dangerous secrets of the world — and to a woman from the future who's come looking for him.
Themes
Episodes
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- E1 Episode 1Next upFeb 17, 2021 · 73 min · ★ 6.9
Synopsis

Aboard a falling plane as the clock ticks toward doom, Han Tae-sul puts his famous mind to work for a solution. Gang Seo-hae arrives in the year 2020.
Guest stars: Lee Jae-won (Kim Dong-Hyeon (Eps 1,8)), Kim Beong-choun (Chinese restaurant owner (Eps 1,2)), Roh Hae-ju (Flight Attendant Park Mi-Jung (Eps 1)), Kim Mi-ra (Flight purser (Eps 1)), Hwang Dong-joo (Co-Pilot (Eps 1,2))
- E2 Episode 2Feb 18, 2021 · 71 min · ★ 7.0
Synopsis

The contents of a mysterious suitcase give Tae-sul more questions than answers. In exchange for lottery numbers, Sun agrees to help Seo-hae.
Guest stars: Kim Beong-choun (Chinese restaurant owner (Eps 1,2)), Hwang Dong-joo (Co-Pilot (Eps 1,2))
- E3 Episode 3Feb 24, 2021 · 63 min · ★ 6.7
Synopsis

Tae-sul's presentation at a conference gets a violent interruption. He and Seo-hae make a narrow escape, but more trouble soon follows.
- E4 Episode 4Feb 25, 2021 · 70 min · ★ 6.4
Synopsis

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.
- E5 Episode 5Mar 3, 2021 · 74 min · ★ 6.8
Synopsis

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.
- E6 Episode 6Mar 4, 2021 · 66 min · ★ 7.2
Synopsis

Seo-hae infiltrates Eddy Kim's party with a mission. After a series of distressing events, Tae-sul realizes he cannot trust everyone around him.
- E7 Episode 7Mar 10, 2021 · 69 min · ★ 6.6
Synopsis

Seo-hae urges Sun to flee the country, and asks Mr. Park to do her a favor in exchange for an item he's eager to get his hands on.
- E8 Episode 8Mar 11, 2021 · 75 min · ★ 6.2
Synopsis

Despite Seo-hae's insistence that he lie low, Tae-sul focuses on tracking down an enigmatic figure who seems to be tied to everything.
Guest stars: Lee Jae-won (Kim Dong-Hyeon (Eps 1,8)), Lee So-yoon (Kim Dong-Hyeon's wife (Eps 8))
- E9 Episode 9Mar 17, 2021 · 71 min · ★ 6.4
Synopsis

At the amusement park with Tae-sul for her birthday, Seo-hae encounters someone unexpected. A familiar threat strikes again.
Guest stars: Ma Jeong-pil (Executive (Eps 9))
- E10 Episode 10Mar 18, 2021 · 69 min · ★ 6.0
Synopsis

Tae-sul enters enemy quarters to retrieve Seo-hae. Learning she's been put in a dire condition, he turns to a grudging Mr. Park for assistance.
- E11 Episode 11Mar 24, 2021 · 74 min · ★ 5.8
Synopsis

Tae-sul and Sigma come face-to-face. In order to rescue Seo-hae, Tae-sul must endure an emotional trip through his past.
- E12 Episode 12Mar 25, 2021 · 75 min · ★ 5.8
Synopsis

When Seo-hae wakes up, a person she missed is waiting to meet her. A long-forgotten childhood memory returns to Tae-sul.
- E13 Episode 13Mar 31, 2021 · 80 min · ★ 6.8
Synopsis

Tae-sul is reunited with a trusty friend, who comes to him with a warning. A suitcase containing disturbing contents arrives at Asia Mart.
- E14 Episode 14Apr 1, 2021 · 70 min · ★ 7.0
Synopsis

With the war looming on the horizon, everyone must make their choices. When Seo-hae heads to the only place she knows, Tae-sul finds her.
- E15 Episode 15Apr 7, 2021 · 71 min · ★ 7.3
Synopsis

As Tae-sul tries to locate him, Sigma reveals more details about himself. Sun frees Seo-hae from the bunker.
- E16 Episode 16Apr 8, 2021 · 76 min · ★ 6.4
Synopsis

Tae-sul asks Seo-hae to trust him no matter what happens — and demonstrates that nothing is fixed when it comes to matters of the future.
Cast & crew
Directed by Jin Hyuk
Videos
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Images · 10
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Reviews · from TMDB members
ParkMinSep 17, 2023
They truly bit more than they could chew. "E" for effort, I guess.
™
Cho Seung-woo
Park Shin-hye
Chae Jong-hyeop
Sung Dong-il
Tae In-ho
Tae Won-seok
Jeon Kuk-hwan
Heo Joon-seok
Jung Hye-in
Choi Jung-woo
Go Yoon
Kim Byong-chul













