Birmingham biker paramedic Mark Hayes races to an emergency on a city centre bus. A passenger has collapsed and is refusing to go to hospital. His heartbeat is worryingly weak and his blood pressure low; he could suffer a cardiac arrest. Can Mark persuade him to accept the treatment that could save his life? On patrol in Essex, biker cop Lucy Watson’s routine roadside stop leads to a full-scale immigration investigation. What started out as a faulty brake light turns into something far from a routine enquiry. In Cornwall, an emergency call comes in from a panicked driver whose passenger is in agony and struggling to breathe. Rushing to the scene, biker paramedic Iain Hooper has to get to the bottom of a mystery pain that has left the lady in agony, unable to speak. Meanwhile in Yorkshire, a car has been dumped on a busy dual carriageway. The driver is nowhere to be seen. The obstruction is causing chaos, as passing traffic is forced to jump lanes to avoid colliding with the vehicle.