When Sis wakes up in her father's backyard, staring at a rickety old shed, she can't remember how she got there or even who she is. But she remembers Amy, the sister that disappeared long ago, the same sister that she now hears calling to her from the shed. When Sis enters the shed she discovers that Amy is only there in spirit, and she is speaking to her through a new body, and that body just happens to be a chainsaw.Amy reveals to Sis that she was...