 Jill and Bob Lawrence are on a winter holiday with their daughter, Betty. While he is dancing with Jill, the secret agent Louis Bernard is shot to death. With his last words he tells Jill about an assassination planned by some terrorists, about to take place in London. Fearing their plan would be revealed, the spies kidnap Betty and carry her off to London with them. Bob and Jill come back to London too, searching for their daughter.