Jack, Fleur, Julio, and Amber are imbued with an ancient magic from Gaia and serve as Seasons. Each year, they must kill the Season that comes before them—Fleur kills Jack, Julio kills Fleur, Amber kills Julio, Jack kills Amber. But when Jack and Fleur fall for each other against all odds, the true brutality of their eternal lives becomes all too personal and all too painful. And Fleur is on the brink of being purged, forever—unless they can come up with a plan to stop the cycle. When the four Seasons unite, risking immortality for a chance at love and to reclaim their free will, their escape brings them to a place where they must defend each other against a creator who seeks to destroy them all.