Dolly Levi is a strong-willed matchmaker who travels to Yonkers, New York in order to see the miserly "well-known unmarried half-a-millionaire" Horace Vandergelder. In doing so, she convinces his niece, his niece's intended, and Horace's two clerks to travel to New York City.

When an experimental flying saucer crashes, secret agent Matt Helm has to bring back the secret weapons hidden on board.

The handsome top agent Matt dies a tragic death in his bath tub - the women mourn about the loss. However it's just faked for his latest top-secret mission: He shall find Dr. Solaris, inventor of the Helium laser beam, powerful enough to destroy a whole continent. It seems Dr. Solaris has been kidnapped by a criminal organization. The trace leads to the Cote D'Azur.

Matt Helm is called out of retirement to stop the evil Big O organization who plan to explode an atomic bomb over Alamagordo, NM, and start WW III.