Fantastic Girl

17-year-old Oh Yeseul firmly knows who she wants to be — a sought-after model. And nothing will hinder her from becoming popular. She has beautiful looks, an ideal figure, an amazing boyfriend, and she is often mistaken for an emerging... star. What could possibly go wrong?
One day, the girl goes on vacation with her mother and sister. During the flight, the plane starts to shake, and… the heroine finds herself on a bench in front of her house! It turns out that Oh Yeseul has transported from 2010 to 2020!
How does she find out about this? At home, she meets… her future self! The 27-year-old Oh Yeseul looks disheveled and unkempt, she is lonely, and her only dream is to pass her exams and become a civil servant.
That's when the 17-year-old girl takes on the 27-year-old version of herself: after all, her life can't turn into a romcom with a sad ending?