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Do Min-joon (Kim Soo-hyun) is an outsider that arrived on Earth in the year 1609, amid the Joseon Dynasty. As he tries to help a young lady, Yi-hwa, from tumbling off a bluff, he misses his excursion back to his planet and is stranded on Earth for the following four centuries.
He has a close impeccable appearance, improved physical capacities including his vision, hearing, and speed, and a skeptical, tainted view with respect to individuals. As time passes by, Min-joon is compelled to go up against another personality at regular intervals, as his human appearance never ages.
He has a close impeccable appearance, improved physical capacities including his vision, hearing, and speed, and a skeptical, tainted view with respect to individuals. As time passes by, Min-joon is compelled to go up against another personality at regular intervals, as his human appearance never ages.
In the present, he acts as a school educator. With just three months left before his hotly anticipated takeoff back to space, he meets Cheon Song-yi (Jun Ji-hyun), a renowned Hallyu performing artist who abruptly turns into his nearby neighbor. Gradually, he gets himself ensnared in Song-yi's insane and flighty circumstances, and discovers that she resembles the young lady he experienced passionate feelings for in the Joseon period. Min-joon tries to keep himself far from Song-yi as he needs to leave the planet, however frequently ends up neglecting to do as such.
Be that as it may, Song-yi gets snared in the risky round of Lee Jae-kyung (Shin Sung-rok), the senior sibling of Lee Hee-kyung (Park Hae-jin), who has been her companion since center school and is infatuated with her. Yoo Se-mi (Yoo In-na) is Song-yi's adolescence closest companion who really likes Hee-Kyung since center school. Understanding her affection is only uneven, later Se-mi surrenders her inclination on Hee-kyung and begins to concentrate on her profession as an on-screen character. As Jae-kyung tries to hush Song-yi, Min-joon ends up sparing her different circumstances and in the long run the neighbors fall for each other. In any case, Jae-kyung ends up being a great deal more hazardous than Min-joon suspected as he hurt Se-mi's more seasoned sibling who is researching on an on-screen character killed case that Jae-kyung is firmly included and he additionally bafflingly begins to lose control on his super powers.