The crew of a Polaris submarine, on a training mission simulating an attack on Russia, is stricken by toxic poisoning. One of the poison's effects is to make its victims hallucinate, and the sub's captain imagines that he has been given an order to actually attack Russia. He prepares to do exactly that.
Robert Conrad
as Cmdr. Mark Van Meer
David Soul
as Capt. Kevin Harris
Sam Waterston
as Capt. Allard Renslow
Richard Roundtree
as Cmdr. Frederick Bryce
Jonathan Banks
as Ray Olson
Art LaFleur
as 'Animal' Meslinsky
Dennis Holahan
as Warden
Sergio Fantoni
as Pietro
Yvette Mimieux
as Cheryl Leary
Ed Bishop
as Adm. Stewart Cullinane
Virginia Bryant
as Nurse
