As Hercule Poirot enjoys a luxurious cruise down the Nile, a newlywed heiress is found murdered on board and every elegant passenger becomes a prime suspect.
Dowdy Sylvia accepts her boss' marriage proposal, even though he only asked her to avoid marriage to another woman. As a wealthy wife, Sylvia changes from ugly duckling to uninhibited swan and even contemplates having an affair with a man she meets during a trip to Paris.
A Swedish princess boards an ocean liner in Europe en route to an acting career in America and finds herself getting inconveniently attached to a bandleader returning home. To complicate matters, a blackmailer on board apparently knows she is not who she claims to be - and he has his sights set on...
Sylvester Cat accepts a position as mouse-catcher on a ship, and his son, Junior, accompanies him. They encounter baby kangaroo Hippety Hopper being shipped from Australia and, as usual, mistake Hippety for a giant mouse.
A female cat wants to board a French cruise ship. Prior to the ship's departure, she crawls under a freshly-painted gate and gets a white streak atop her back and tail. Enter enamored Pepé Le Pew.
