俊男美女被困“地狱岛”，逃离方法只有一个：每晚与某人成为情侣。配对成功的人当晚可搬去“天堂岛”，享受优质食物和住宿，而未找到伴的人，晚上得在“地狱岛”自力更生。Sue is determined to keep the children safe, and in doing so, struggles with whether or not she can trust Mother. Meanwhile, a new threat arises and an increasingly erratic Marcus causes the Mithraic to question their leader.