An American astronaut, Brent, is part of a team searching for a missing colleague, George Taylor, on an unknown planet. Crash-landing, Brent is the only survivor and discovers the planet is actually Earth in the year 3955, with New York City nearby.

Beneath the Planet of the Apes
A lone astronaut searches for a missing explorer on a distant planet, only to uncover a world where intelligent apes dominate the surface and a hidden city of telepathic humans secretly exists beneath.