AllMovie

While conducting a top-secret biological study in an underground sewage system, a team of scientists discovers a nest of alien eggs. Quickly destroying the eggs before they can hatch, the scientists are unaware that one of the eggs has already hatched, and an adaptable reptilian creature soon adapts the form of a beautiful woman who begins to integrate itself into human society. She is searching for sustenance and a means to fertilize her eggs, and an unknowing man subsequently falls for the human-looking creature to horrific results.