 While on an exploratory research trip into the jungles of South America, the beautiful Teresa Burns in bitten by a strange creature. Upon returning home Teresa starts to change - she is more aggressive, with heightened senses and an uncontrollable passion. The mysterious bite has inflicted her with the lust of a wild woman and the killer kiss of a demon. Teresa s boyfriend Paul is detained as the prime suspect of several mysterious murders. He informs the police about his girlfriend s strange behavior since their return and that it is she who is responsible for the murders. As Teresa s passion grows stronger, so does her bloodlust. Soon the demons within her take over, pushing her to the edge of sanity.