Hector travels with Luisa by the road linking Madrid with Barcelona. When another car suddenly crosses his path, his vehicle leaves the road and plunges into a tree. Hector dies and she is seriously injured. The other car was occupied by Jorge and Paula, her lover. Several vehicles cross before the car crash and do not stop, each for a different reason. Among them is Julio, a truck driver who does not stop in order to reach his destination on time, not knowing that at the wrecked car travels his old girlfriend.