An ordinary earthling is captured at random and taken to a mysterious planet to stand trial for the fate of planet earth.

An Alaskan bush pilot attempts a daring rescue of a stranded researcher deep inside an arctic cave system thought to be an entrance to the inner earth, only to find himself battling creatures not of this world.

A 19th century fur trapper must figure out his past when he awakens all alone in the Rocky Mountains badly hurt and with temporary amnesia.