Sequel to The Mouse that Roared; The Tiny Country of Grand Fenwick has a hot water problem in the castle. To get the money necessary to put in a new set of plumbing, they request foreign aid from the U.S. for Space Research. The Russians then send aid as well to show that they too are for the internationalization of space. While the grand Duke is dreaming of hot baths, their one scientist is slapping together a rocket. The U.S. and Soviets get wind of the impending launch and try and beat them to the moon.
An incompetent boarding school headmaster, Professor Jim Edwards, devises a bizarre plot to raise the profile of his boarding school, and thus save his job, by passing off his bookie's son as a Middle Eastern prince. The headmaster's madcap scheme is further complicated when an official from the Foreign Office arrives and announces that a real prince is to be placed under Edwards supervision, not due to the schools lofty reputation, but that a gang of kidnappers are unlikely to look for the regal child there.
Angela Barrows is a man-eating business woman sent by her American employer to investigate their export opportunities in Edinburgh. En route she meets Robert MacPherson, a businessman who asks for her help to bring his company into the 20th Century. The staff, led by Mr Martin, has other ideas—and a battle between the old and new business methods soon breaks out.
When his mother eloped with an Italian opera singer, Louis Mazzini was cut off from her aristocratic family. After the family refuses to let her be buried in the family mausoleum, Louis avenges his mother's death by attempting to murder every family member who stands between himself and the family fortune. But when he finds himself torn between his longtime love and the widow of one of his victims, his plans go awry.
A paraplegic baroness mistakes a man's pity for love - and tragedy ensues.