When Jessi Scott (Barbie Ferreria) moves back in with her mother Joan (Melissa McCarthy) to take care of her after she is finally able to move into her own home after being in the hospital for so long because of breast cancer and then now being declared in remission. As they live their first weeks in the new place they figure out something isn't quite right and they begin to witness and see things that aren't of this world and Joan fears what's here wants to harm her daughter and realizes it's her turn to protect and take care of Jessi from whatever it is.