During a test flight for a new radar-invisible plane known as Chesire the pilot(Suzanne Somers) and aircraft disappear and Steve Austin must figures out what happened.

While testing a new fuel aboard an experimental space craft, Col. Steve Austin experiences difficulties while preparing to land and is pulled off course to splash down near a remote island in the Pacific. There, he attempts to contact Oscar at OSI to inform him of his whereabouts, but when another government agent shows up and identifies himself as Oscar's replacement, the Colonel is shocked to learn that 6 years have supposedly passed, Oscar is dead and he has been declared a traitor after supposedly defecting to the Soviet Union