A comedy about the young notary Thore, who mistakenly opens a private letter to his boss, lawyer Larsson. The letter says that a certain Eva Larsson will inherit a piece of land in Guatemala, containing large oil deposits. A baby photo of Eva has been included for identification, and when Thore is fired for his mistake he happens to bring the photo with him.
On a tourist trip abroad the passengers on the coach witness an assassination attempt on the President Hurkas. One of the tourists has evidence against the perpetrators, and is killed when the coach reaches Sweden. Another passenger observes how one of the perpetrators is picked up by a yellow car. She is kidnapped and locked up in a mental hospital.
At the home of Ulla, the girlfriends meet, as usual. This evening, however, pedantic Beatrice needs to move in with Ulla because she has been thrown out by her husband. Ulla knows the solution to Bea's problem and invites her neighbors, two fiery Spaniards.
