Michel, his wife Claire and their three little daughters Jeanne, Sarah and Iris are traveling to their cottage in Switzerland to spend summer vacation. When they stop the car, Michel goes to the toilet and a man stares at him. Soon the man introduces himself as Harold "Harry" Balestoro, who studied with Michel in high school and knows him very well. When Michel and his family go to their car, Harry parks his Mercedes Benz and introduces his fiancée Plum to the couple and invites themselves to travel to Michel's house for a drink. Later her recalls by heart a poem