It is not an ordinary Sunday for NSW Ambulance, as eighty thousand people hit the streets in Sydney's annual City2Surf. Paramedics drive through the crowds to locate someone in trouble. A deadly drug overdose and a drunk and enraged ice addict - all this in a day in the life of a paramedic.

In Brisbane, a bystander calls in a crash in the heart of Brisbane CBD involving a motorcyclist and taxi. Paramedics arrive to find patient Hector facedown on the road, not moving.

A crash on a busy intersection sees a severely broken leg front and centre, but paramedics fear the patient may also have spinal cord injuries. Plus, a patient sufferis from potentially deadly sepsis.

When a motorbike rider falls traveling at high speed, his injuries are so severe that highly trained paramedic, Aaron, must turn the side of the road into an operating theatre to save his life.

It is one of the busiest days of the year for paramedics, Australia Day. Faced with an increase in alcohol related calls Sam and Tammy attend to a man passed out in the middle of the road in his car.

The team face the realities of life between birth and death. A newborn baby birthed in a car, an infant needing CPR and a two-year-old boy struggling to breathe.

The low blood sugar levels of 23-year-old type one diabetic have led to a dangerous seizure. Another code 1A comes in for two-year-old Levi, suffering serious respiratory issues.

Ambulance Australia follows people in the business of saving lives, going beyond the flashing lights to the heart and soul of heroes.

The crews attend the scene of an explosion at a worksite, which has left three men with burns and smoke inhalation, a motor vehicle accident involving two cars, a young girl who has fallen from a horse, and a man with a sore finger. Sisters Sam and Tammie receive a surprise when a suspected deceased patient is found alive and well.

A child makes an alarming call about a 5-year-old stuck in mud, but all is not as it seems. A suspected stroke is reported at an alleged workplace, only to find a severely intoxicated man at a party.

NSW Ambulance crews race to a call for a slashed throat, perform life-saving CPR on teens, treat a suspected drug overdose at a brothel and rush to a potential stroke at a building site.

Tonight, a man claims to have jumped off Brisbane's Story Bridge and we see the effects this has on the professionals who are racing to piece together a puzzle to try and save a life.

Tonight, Ambulance NSW responds to an 88-year old's severe head wound, a hair-raising motorbike accident, a life-saving CPR call, a serious burns incident and a challenging 170kg patient extraction.

In tonight's season premiere, we follow Shane & Shelly, who must help a patient in need of urgent care after an incident involving a car. It's classified as a code 1A, the most serious emergency.

A shortage in ambulances. Long wait times for patients heading to Liverpool Hospital. A horrific motor vehicle accident. Brain injury. A house fire. Suspected domestic violence. All this in the day-in-the-life of a paramedic.

Crews are called to a motorcycle accident in peak hour traffic, and paramedics must solve the cause of an elderly woman's excruciating pain. Call taker Laura celebrates her last shift in the control centre before leaving to become a paramedic, while a devastating car crash on the far outskirts of Sydney throws crews into overdrive as they face the tyranny of distance.

When a head-on collision leaves one driver trapped in their car, Tash, a specialist Critical Care Paramedic, is faced with a difficult decision to try and save the woman's life.

Paramedics Jeff and Tamara are called to help 92-year-old Ray, who is pinned under his mobility scooter after it tipped over, and then attend to a baby who is turning blue and struggling to breathe.