Tom, a plastic surgeon in Paris, is busy performing beauty magic every day and gradually loses his passion for life. He proposes to take his wife, a psychiatrist who is about to give birth, and their two naughty children to the south of France for a two-week vacation. Unexpectedly, on the day of departure, the playboy grandpa, who cries and loves to change his female companions like changing clothes, also jumps in the car to join this family trip. The trip just started, and the passengers in the car are noisy. Tom calmly turns on the cruise control system and starts to brag about how good this new high-tech Medusa RV is, only to find that the cruise control system cannot be disabled. The car is speeding on the highway at full speed and can't stop...