In Mark Heyman's feature film directorial debut, married couple Patrick (Joseph Gordon-Levitt) and Abigail (Phoebe Dynevor) journey to a new-age retreat in New Mexico, drawn by the possibility of healing after a traumatic event. Patrick is willing to do anything to help his wife, but becomes distrustful of the retreat’s enigmatic leader (Jacki Weaver) even as Abigail falls under her spell. As paranoia builds, the couple must determine if the group’s spiritual practices offer genuine healing – or mask a terrifying truth that threatens to consume them both.