Aspiring model "Valentine" (Irène Jacob) is driving home one evening when she runs over a dog. Luckily, it's not seriously injured and after a trip to the vet she repatriates it with the "Judge" (Jean-Louis Trintignant). A quick look around his home though and she realises that he is a snoop! He listens into all the private conversations of his neighbours, records their chats and their peccadillos - all of which is, of course, illegal. Caught between her disgust at his behaviour and her gradually developing affection for the man (and the dog) she finds herself in a bit of a catch-22 scenario. ...