In a world where everyone is born with a mark on their wrist. THe mark isn't pointless, no, it finds soulmates. Gwen is a highschool student, 14 years old. She says she doesn't believe in "young love" yet in reality she longs for someone to love her like in stories. On the first day of freshman year she bumps into a boy, Leo. One thing she never expected was that he would change her life forever.