一个会玩电脑、动手能力超强的男孩和母亲、爷爷住在一栋大房子里，圣诞节他要求圣诞老人到家服务，结果上门的是个杀人的疯子!　　他利用各种玩具、工具和疯子在家中周旋……最后带爷爷逃脱。

　　In the year 2961, the time is after humanity and nature has recovered the land. A hunter named Cygnus is called to rise above his duty. He provides