An employee of a secret company operation becomes the victim of the company's special weapons project. He is transformed into a robotic killing machine that, because of his programming must destroy anything that comes near him.

When drillers on an offshore oil rig dredge up several prehistoric eggs, one man is attacked by what appears to be an unidentified deep-sea creature protecting them. Soon, strange symptoms and behaviors become apparent among the crew and one of the creatures grows to adult-size.