When Dr. John Beck and his wife Cathy fall into an underground cave, a huge bat bites the doctor. Soon, the doctor begins to mutate into a horrible, blood-sucking monster. Dr. Beck embarks on a killing spree to conceal what he's become.
When Dr. John Beck and his wife Cathy fall into an underground cave, a huge bat bites the doctor. Soon, the doctor begins to mutate into a horrible, blood-sucking monster. Dr. Beck embarks on a killing spree to conceal what he's become.
