
As a result of nuclear testing, gigantic, ferocious mutant ants appear in the American desert southwest, and a father-daughter team of entomologists join forces with the state police officer who first discovers their existence, an FBI agent and, eventually, the US Army to eradicate the menace, before it spreads across the continent — and the world.

as Sgt. Ben Peterson

as FBI Agent Robert Graham

as Dr. Pat Medford

as Dr. Harold Medford

as Brig. Gen. Robert O'Brien

as Maj. Kibbee

as The Ellinson Girl

as Trooper Ed Blackburn

as Trooper Capt. Fred Edwards

as Alan Crotty

as Mrs. Lodge

as Jensen

as Ambulance Attendant

as Child Psychiatrist

as Railroad Yard Watchman

as Army Sergeant

as Bald Reporter at L.A. News Conference

as Government Official

as Trooper #2

as Soldier

as Matron

as Official at D.C. Meeting

as Blonde at Police Station

as Teenager in Police Station