A kidnapped diver is taken to an island inhabited by a mad scientist and his half-animal, half-human creations.

In this loose remake of "Forbidden World" (1982), Commander Krieger and his robot companion Tinpan are summoned by a distress call to a research facility on the planet Phaebon, and soon find themselves battling a bizarre virus and a monstrous creature inadvertently created by the scientists there.

Mercer's brother, an amateur pilot, crashes on an island and is killed by a giant spider. A year later, when Mercer goes in search of him, she discovers a breed of poisonous arachnids ready to attack.

When radiation left behind by atomic weapons testing creates a gigantic killer mutant arachnid, it's up to a trio of scientists, an Army general, and a newspaper reporter and his fiancée to figure out how to stop the hungry beast from devouring the entire county.

In the line of b-movies from the VHS craze and Italian splatter and trash films, comes the continuation of the story of "Dentes E Garras!". Three months after the events of the first film, an aquatic monster that escaped from the grip of the army is terrorising tourists and swimmers at a summer lake resort. Meanwhile a surviving dinosaur hatchling is about to join in the fun, triggering a catastrophic outcome.