A scientist in the swamps is trying to combine plants and animals. Another scientis as after the formula for this, so attacks the laboratory. He is transformed into the swamp thing, a woman escapes (Adrienne Barbeau) and a battle of wills and strength ensues. This is Wes Craven's 1980s take on the 1950s creature feature. It is a bit episodic with some good scenes and some not so. The performances are also variable, with Adrienne Barbeau the best of them.