Curtis一家被选中去测试一种革新性的居家设备：数字家庭助手AIA，包括各种感应设备和摄像头等，能把“智能家庭”提升到新境界，从学习家庭成员的行为、预测他们的需求开始，AIA会保证：没有任何东西——任何人——阻碍这一家人。包括杀人，以及……
A botched faith healing bestows supernatural Shaman powers on a bullied teenager. When his lifelong tormentors pull a prank that kills someone he loves, he uses his powers for revenge and goes on a bloody rampage to settle the score.
