Does the future need the past? ​​Gwen Cooper never imagined she would return to the Otherworld. But when her Breenan friend Bran grows ill, she must pass through a portal once again to take him home. Gwen's actions three months earlier have left the Otherworld failing and her mother dying. Driven by guilt, Gwen must travel through dangerous Breenan territory on a quest for a spell to restore the realm and heal her mother. She encounters terrifying obstacles and a ruthless Breenan king who puts a countdown on Gwen's life. Can she unite her two worlds to restore the realm before she is lost in the Otherworld forever?