Lt. Tarkhanov, a Russian test pilot, sent to Germany on secret mission is hampered by Russian agents. The Russian Air Force lieutenant who wants to defect to the West, arranges to fly out the latest Rusian Mig jet to an American Air Force base in Germany.

A new jet engine that is being tested for its suitability for mass production blows up on the final test. Exam of the wreckage shows evidence of sabotage. U.S. Intelligence agents try to find the sabateur.

Clara Koller, a widow, has the important job of handling the budget of a manufacturing company engaged in a secret government project. When she is asked to join a friendship club she accepts, unaware that the club is a front for enemy agents.

Captain John Benson is sent to investigate when a fellow officer is murdered trying to trap an enemy agent on a missile base. Benson arranges to hold open house at the base in an attempt to capture the entire ring of agents at the base.

Fred Lang, an enemy agent, works as an engineer on a missile base in Los Angeles. He learns that a group of scientists is scheduled to fly to Cape Canaveral and is ordered to place a bomb on the plane.

U.S. Intelligence men learn that a U.S.S.R. sub operating from a base in Albania plan to interfere with movements of the U.S. Sixth Fleet in the Mediterranean. Two agents are assigned to get information re the U.S.S.R. plans.

Jessica Tabor overhears a plot to assassinate King Hussein of Jordan and turns to secret agents James Foster and Harry Shaw to help forward information to Jordan and put the King out of danger.