When a 35-year-old woman collapses on the street her heart stops and she is clinically dead. The emergency team have to apply shock treatment and perform CPR, but will her heart begin to restart?

Observational documentary series following the doctors and paramedics of London's Air Ambulance and the specialist trauma team at the Royal London Hospital. Doctor Dom rushes to the scene of an accident where a driver is trapped in a car that has rolled over into a ditch.