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

Paramedics are called to a bomb threat at Sydney airport, while good friends Mosh and Kren are called to a 35-week pregnant woman who hasn't felt her baby move in 10 hours and has severe bleeding.

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

With an emergency phone call every ten seconds, it is Australia's biggest night: New Year's Eve! The ambulance service is stretched to its limits and then something terrible occurs at the worst possible time: a cardiac arrest.

This episode focuses on the Duty Operations Managers (DOMS). Mick attends a suspected terrorist incident at a consulate, newly promoted Joe goes to the scene of a factory explosion that has left one man with 40 per cent burns to his body. Brian recalls the Victoria fires as he treats firefighters at a north western Sydney bushfire.

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.

Paramedics Ali and Josh respond to an urgent stabbing and get stuck in the middle of a terrifying street brawl, and the worst hail storm tears through the city.

The officers deal with a high volume of pregnancy-related calls in summer; emergency workers respond to a car crash on a remote dirt road.