As described in a film magazine,[2] Princess Kalora (Normand) of Morovenia, a fictional country where obese women are prized and the normal-sized princess is widely regarded as being too slender, finds no suitors in the matrimonial market. Her younger sister, weighing in the neighborhood of 300 pounds and who is also the family favorite, is sought by the eligible men of the court. American millionaire Alexander Pike (Thompson) sees the princess and immediately falls in love with her, and is then hounded from the country by the police of her father. The princess is later sent to America to partake of a patent fat producer that is widely advertised, and meets Alexander at the Ambassador's ball. Their romance is interrupted when a cable calls the princess and her bodyguard back to Morovenia. Arriving at home thinner than when she left, Kalora is thrown into a dungeon. When Alexander, whose millions are no less powerful in Morovenia than in America, arrives, he convinces her father of his love for Kalora, marries the princess, thus opening the way to the altar for the second daughter, and all are happy.
^"Reviews: The Slim Princess". Exhibitors Herald. 11 (6). New York City: Exhibitors Herald Company: 71. August 7, 1920. This article incorporates text from this source, which is in the public domain.