 Martin Wide (Martin Ljung) inherits a bus from his dying grandfather. He restores it from being a hen house into a tourist bus. He puts an ad in the newspaper about "travels to the sun" and also advertises for a stewardess at the same time. The female reporter Vera Boman (Ann-Marie Gyllenspetz) signs up for the job, in order to expose the "tourist travel hoax". The two, together with passengers of various kinds set off from a snowy Sweden towards Paris. During the trip, Vera starts to realize that Martin is not a "tourist cheater" but a kind and thoughtful travel arranger, who tries to tend to all his passengers as best as he can, even when the situations become difficult to handle. In addition, a famous Swedish diamond has just been stolen and it turns out that both the thieves and the private detectives who are after them, are passengers on the bus.