The distinction between faith and religion is explored amid an assortment of frayed relationships when a devout Christian man contracts a life-altering illness, forms a drug dependency and becomes the key suspect in a murder investigation.

Drug addict Kait flees to a house in the woods to self-rehabilitate, where her sister Olivia joins to document the process, but the house's layout begins to change, trapping them inside an inescapable puzzle box of a house.