At a difficult place in his marriage and career, a middle-aged man gets a shot at a do-over when he's transformed back into his 18-year-old body.

Da-kyung, a horror YouTuber desperate for views, uploads a video about the eerie urban legends surrounding Gwanglim Station — the site of the highest number of missing person cases in the country. The video goes viral overnight. Despite everyone's warnings, Da-kyung's thirst for views only grows stronger. But as she digs deeper, she uncovers a shocking secret behind the station…

About an ordinary high school sophomore, Song Woo-yeon, who joins a drawing club called Spirit Fingers and paints the story of finding her own color, personality, and dream.