Three girls in Paris is the story of three Danish girls (Ghita Nørby, Susse Wold and Hanne Borchsenius) traveling to Paris, but after having placed suitcase and money on the hotel and takes off in the city, they forget what it's called and where it is located. They are helped by a Parisian taxi driver, and meets a series of typical French.

Five young people take part in a party. During the party, a man is hit and killed nearby. The driver flees. The next day, one of the young people cannot remember anything about the time surrounding the accident. Is he the perpetrator? A witness leads the police on the trail.