As Charlotte steps through the gate, she has a strong feeling that nothing will ever be the same again. Moving back to South Carolina after three years away, Charlotte knows she's going to have to face people from her past and adjust to a new high school, but she's completely unprepared for what else waits for her in Charleston. Drawn through an old garden gate, Charlotte discovers a hidden world where she meets Calvin, a boy to whom she is inexplicably attracted. As Charlotte is pulled deeper into this hidden world, it's up to her older brother Kevin to rescue her. No matter how hard Kevin tries, the rescue depends upon Charlotte fighting her intense feelings for Calvin while mastering a set of abilities that she has only just discovered she possesses.