My First Love

Kang Shin-woo, a 28-year-old "Born to be single" who is just around the corner but has never been in a proper relationship. Shin-woo, who had a sudden accident, goes back to the past without knowing why, where he meets his first love again in 10 years!

Kang Shin-woo travels 10 years back in time and meets his first love again.

The younger Shin-woo decides to confess to Jisoo and heads to the meeting place.

The older Shin-woo and Ji-soo, who suddenly caught fire at school in the middle of the night and were trapped in the classroom! A thrilling night! Ji-Soo is nervous at the thought of the older Shin-woo, and the older Shin-woo is also heartbroken at the thought of Ji-Soo secretly.

The older Shin-woo tries to go back to 2017 as everything gets twisted, but he fails repeatedly. On the other hand, his mom realizes that the older and the younger Shin-woo are the same person and decides something.

After many twists and turns, the older Shin-woo goes back to 2017! As soon as he found out he was back in 10 years, he double-checked mother's death. How much has changed in the past and the future?