Season 1

High school friends Ha-na, Ha-ru, and Woo-jae are torn apart when Woo-jae is killed protecting Ha-na from a stalker. Years later, a mysterious accident sends the twins back to 2010, where they awaken in each other’s bodies. Determined to save Woo-jae, they must navigate swapped identities, changing timelines, and feelings that could alter the future.