Emma, 17, meets Thierry, 27, her new math teacher.

Henri is a middle-aged writer with fading inspiration who has published nothing worthy of note in years. Feeling increasingly misunderstood by his wife and four grown up deadbeat kids, he dreams of running away to start over again. Yet when he discovers an unattractive, bad-mannered dog in his garden, he decides to adopt him and both start developing an unexpected friendship that inevitably upsets Henri’s family and neighbors.