"Sisyphus: The Myth" opens with her father's farewell to her - Kang Seo Hae (Park Shin Hye), while about to leave, her father mentions not looking for Han Tae Sool (Jo Seung Woo) for any reason. Suddenly, Kang Seo Hae with a mysterious background time travel until 2020 and is chased by a mysterious team.
To the male lead Han Tae Sool, he was on a plane to return to Korea when the plane suddenly crashed and fell. Tae Sool uses his ultimate knowledge of physics and IQ to save 261 passengers on the flight.
After the accident he was in a coma for 1 month, Tae Sool woke up and received praise from everyone for his actions to save lives. After escaping death, Tae Sool tried to find out why the plane crashed, then discovered a suspicious point from the USB that the vice-captain gave him, the sudden appearance of his deceased brother.
From waking up from a coma due to a plane crash, Tae Sool has always remembered his and his brother's memories, of which it is important when his brother Tae Sool warns him of the existence of a A group of mysterious people exist on earth and are searching for Tae Sool.
Going back to Seo Hae, at that time Seo Hae met a new friend, let her stay. After reading the news about Tae Sool on TV, Seo Hae immediately called his company and warned about a group called "Sweeping Team" hunting and killing him, Seo Hae especially stressed Tae Sool absolutely must not open the suitcase, otherwise things will get worse.
Vice-captain seems to be holding a certain secret regarding the true cause of the accident, before meeting the reporter to clarify the incident, he was bombed to death! At that time, suspect was probably the "Sweeping Team", this was also the first scene showing the danger of this mysterious team.
The end of episode 1 is the scene where Tae Sool opens a mysterious suitcase that he thinks belongs to his brother
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