It's a freezing cold Christmas in the 70s in Stockholm and the young writer Bobo decides to help the beautiful upper class woman Bonnie carry her Christmas tree home.

Private detective Ture Sventon is visited by his friend Mr. Omar of the Arabic desert. Sventon decides to travel with Mr. Omar on his flying carpet to Paris. However, Sventon almost exclusively lives on cream puffs, and to transport these across the continent, he needs a portable fridge. He pays a visit to Stockholms foremost fridge inventor and are introduced to a new fridge which shrinks and deshrinks the food. The inventor is afraid his new invention will be stolen, and thus Sventon brings it to Paris where it gets stolen.

Beck and his men investigates a murder of a Russian woman. At the same time as SÄPO (The Swedish Security Agency) sees a chance of getting a Russian in the embassy deported.