After accidentally killing a bear cub while celebrating graduation in the woods, four teens become the target of a seemingly unstoppable Grizzly.

A renowned but mad professor leads a small group of American students into the jungles of Africa to investigate a remote tribe of killer chimpanzees rumored to be the missing link.

A group of friends decides to venture onto a trail high up in the mountains that has been closed for repairs. The already dangerous adventure turns into horror when they realize they are not.