Octavia Spencer stars in this American horror as Ma, a lonely outcast whose initial friendly intentions soon escalate to disturbing behaviour. When a group of teens stop Ma outside of a convenience store to ask her to buy them alcohol, she is at first reluctant before agreeing to help them out. She then invites the group back to her home where she offers them the exclusive use of her basement to have parties and invite their friends over. The gang can't believe their luck, but when Ma's behaviour becomes intense and controlling, they begin to wonder whether their host has hidden agendas. Is Ma simply an unfulfilled and lonely woman or is she capable of dark and dangerous things?