Shin Jung You

Everyone has imagined it at least once. What if you could go back to the past? Jang Hye Seong, a well-known painter, visits his alma mater, Seongjin High School, to give a special lecture at the request of his friend Tae Jun. During a break, he stops by the art room and discovers his old sketchbook. Inside it, he finds a drawing of his first love, Lee U Jin, half undressed. On impulse, Hye Seong redraws U Jin right there. The moment he finishes the painting and puts the brush down, he is suddenly transported back to 2008, his high school days, where he reunites with U Jin. Even after returning, Hye Seong doesn't want to repeat the mistakes he made back then, so he tries to keep his distance from U Jin. But with U Jin boldly and persistently coming closer, Hye Seong is left completely defenseless. Their eighteen begins again. Can they change their fate and finally reach each other?

Dong-Uk who is always sensitive from being haunted by ghosts every night. However, he manages to sleep peacefully for the first time in his life, when he sleeps next to Dohyeon. They thought they were meant for one another and knew everything about each other, even though they didn't talk much. Dong-Uk feels that their relationship is not working well and tries to hold on to Dohyeon, while Dohyeon is afraid to find out what's about to come when the happy moments are gone. Just like the weather forecast, their love is so unpredictable.