The US military is running a test for a special type of radio transmitter, to be used to communicate with submarines, in a deep system of underground caves in Central America. When the signal from one of the transmitters suddenly disappears, a team of soldiers led by Major Elbert Stevens and cave specialists led by Rupert 'Wolf' Wolfsen including scientist Leslie Peterson are sent in to find out what happened. Exploring deep underground, they stumble upon a tribe of albino cave-dwellers who have apparently been isolated from the rest of the world for thousands of years. The cave-dwellers are hurt by radio frequencies and are able to see in infra-red frequencies, tracking the explorers by their body heat.

The California Atoms are in last place with no hope of moving up. But by switching the mule from team mascot to team member, (He can kick 100 yard field goals!) they start winning, and move up in the rankings, Hurrah! The competition isn't so happy.

Six rough and tumble motor cyclists meet at the side of an empty highway to plan their adventurous excursion cycling to Los Angeles. The burly bunch are Michael (John Alderman), David (Tom Basham), Henry (Bob Bihiller), Arnold (Bruce Kimbal), Eddie (Henry Olek) and Ronnie (Maurice Warfield). They're deceptive: although they look like the adventure addicted non-conformists of today out to raise Hell as they brawl their way over countryside and local towns, actually the six are on a different type of trip to the City of the Angels.

John Tucker's son travels back in time 30 years to save his father from being killed by thugs he is currently pursuing back in 1990.

A rocket containing bio-hazardous material to be disposed of by launching into space crashes in a remote wooded area. An army team is sent to recover it. One of the men is infected and mutates into a monster, killing most of the rest of the team. One man escapes with the help of a brother & sister who live in the woods. He then tries to stop his former buddy, while also fighting against another army team sent in to destroy everything. The bio-material was supposed to create a super-soldier, was banned, and the crash of the rocket appears to have been deliberate so the experiment could proceed. But who is behind it all? And will others be infected?

A team of men and women investigate the mysterious deaths of two previous expeditions to a strategically important but barren world.

While on a family outing, a boy, Adam, gets lost in the forest and discovers a wild boy there. Communicating by sign language, they become friends. When the wild boy is captured by scientists, Adam helps him escape.

A UFO is stranded on earth and impounded by the US government. Its pilot, a cat with a collar that gives it special powers, including the ability to communicate with humans, has eluded the authorities and seeks the help of a scientist in order to reclaim and repair his ship and get back home.

Three couples go on a camping trip in the woods of southern California during the summer, where a deformed man is stalking their camp.

Prisoners of Detention Satellite 3 plan an impossible escape.