With magic gone, Otherside is more vulnerable than it has ever been. Arden Finch can steal magic back, but that means risking her life and Troy's to Dreamwalk through the underworld in a series of tests. Even with a squad and celestial help, the trials could have dire consequences. Surviving and succeeding will require Arden to make unlikely alliances and face her own nightmares, but that's easier said than done...