Prior to the Normandy landings three replacements are assigned to the 1st Platoon, "D" Company, 502nd Parachute Infantry Regiment. Amongst them is Private Mason (Tom Tryon) who doesn't get along with his fellow paratroopers but is kept in the unit by his platoon commander Lt. Pauling (Jan Merlin).
Soon after the drop, Lt. Pauling is blinded and Mason learns how to be a paratrooper when he takes care of his Lieutenant.

Rival prison factions surround a Los Angeles convict who has $1.5 million stashed on the outside.

A kidnapped diver is taken to an island inhabited by a mad scientist and his half-animal, half-human creations.

When an evil scientist steals his colleague's time machine his colleague's beautiful, brilliant daughter, aided by an L.A. cop and a hapless admirer, pursues him back to twelfth century England where - disguised as a damsel in distress - she enlists the help of a knight errant whose secret past holds the key to her future.