This is Paris nowadays. A high school student comes back to the apartment she lives in with her father, accompanied by Louis, her classmate and boyfriend. For the first time since she has known him, the girl asks him to go upstairs to her place. Louis agrees, discovers the large bourgeois apartment his girlfriend shares with her writer father. The latter is away from home so the two love birds start fondling and kissing in the girl's bedroom. Unfortunately, Daddy comes home earlier than unexpected, interrupting their intended love-making, without being aware of the two teenagers. Also unanticipated is the fact the printer suddenly activates. To his sweetheart's dismay, Louis snatches the text spat out by the printer. He soon hands it over to her and she finds out, reluctantly at first, that this is a short story written by her father, dealing with the wonderful time when she was three and when father and daughter lived in total fusion.