One morning in a traffic jam on his way to work, a driver is distracted and slams into the car in front. When the woman driving the other car reacts with a torrent of abuse out of all proportion to the incident, the driver cracks and decides to teach her a lesson, by dedicating his whole summer to ruining this foul woman's life. But his plans for revenge are thrown by the sudden appearance of Rosana, his intended victim's compelling teenage sister, and he finds himself and his base instincts sev