A group of friends get together for a birthday dinner. It's the end of the meal and the atmosphere's high: people are singing, drinking, hugging each other, telling jokes. Then someone asks a riddle: "In the Amazon, three ants are walking on a tree stump…". The evening will soon change tune.
Jerôme
Dr. Henry Harriston is a successful psychoanalyst in New York City. When he is near a nervous breakdown, he arranges to change his flat with Beatrice Saulnier from France for a while. Both don't know each other and both find themselves deeply involved into the social settings of the other, because the decision to change their flats is made overnight. Could be the perfect amusement, but suddenly Henry finds himself beaten up by Beatrice' lover and Beatrice is considered to be Dr. Harriston's substitute by his clients...
