A young man gets stabbed three times in the chest and goes into cardiac arrest; a motorcyclist is injured in a high-speed collision.

A young man is critically injured in a car crash; a cyclist involved in a collision; a young woman's heart stops after a sudden collapse in the street.

A doctor performs open-heart surgery in the street on a woman in cardiac arrest. An 11-year-old goes mysteriously blind after being hit by a car.