Cho Lee-hyeon

A shy math teacher time-travels back to high school to win his lost love, competing with his younger self for her heart.

KDI-109, a male robot from the future, comes to live with Shin Ki Won's family. She is a girl who is studying in the philosophy department.

Three friends from college are now on the brink of turning 40. To attend a funeral on Jeju Island, they go on an unexpected trip as a getaway and wind up at a guest house, where water shimmers, wind blows, and pretty women are seductive, inviting the trio back to their 20s.