Suffering a mental breakdown after the death of his cat, introverted loner Ted convinces himself that in order to bring his beloved pet back to life, he needs nine human lives to sacrifice. Constructing a cat costume, complete with mask and razor-sharp claws, Ted embarks on a murderous rampage. As the butchery escalates, a twisted and bleak romance blossoms between Ted and Claire, a young woman who has also recently lost her cat in a horrifying incident.