Four women awake in an underground cell with amnesia. The women soon discover that they are part of an experiment with no obvious purpose. They are visited, one by one, by the SURGEON who cuts a four digit number into each woman's skin at the exact time he will return to kill them. Each woman must quickly piece together the dark secret behind the gruesome experiment and somehow survive the Surgeon's nightly visits of pain, torture and grisly murder. Be prepared for a shocking ending that will leave you breathless!