The Grace Field House is an orphanage surrounded by a forest, where children live happily under the care of their "Mama," Isabella. While they take daily tests, the children are allowed to play freely, as long as they don't venture too far. Every few months, a child is adopted and sent away, never to return. Suspicious about what happens to the adopted children, the three oldest siblings begin to uncover a horrifying truth about the orphanage. They soon learn of the cruel fate awaiting them and the dark secret behind their beloved Mama’s role in their lives.