A rural Colombian village is attacked by a horrible sea serpent, aroused by industrial pollution of a nearby lake. Based on a real event that took place in June of 1971.

Poe's fiance, Lenore, falls into a coma and is taken for dead. She is rescued at the last possible moment from being buried alive, but the experience has driven her insane. On the advice of his friend, Dr. Forrest, Poe commits Lenore to the asylum run by Dr. Grimaldi. On a visit to the asylum, Poe and Forrest sense that something strange is going on, and decide to sneak back in after dark and investigate.

In order to rescue the son of a diplomat who has been kidnapped by terrorists, a group of Las Vegas showgirls undergo commando training and organize a rescue operation.