Gurus in the late Goryeo dynasty try to obtain a fabled, holy sword, and humans in 2022 hunt down an alien prisoner that is locked in a human's body. The two parties cross paths when a time-traveling portal opens up.

Because of her looks, Koo Ae Jin is bullied at school and even insulted by strangers. But after school, she leads a secret life: with heavy makeup and hours of photo editing, she lives as Genie, a social media star with 770K followers. While Koo Ae Jin is toeing the line between her true self and Genie, what will happen when a boy from school discovers her secret?

A student and a reticent teen first meet at a bakery in the 1990s and try to find each other through the years, as fate keeps pulling them apart.