An extraordinary team of real-life medical heroes fight to save desperate patients suffering life-threatening injuries, in one of Australia's biggest and busiest emergency hospitals, The Royal Melbourne.

A gunshot victim arrives under police guard and Dr Sarah fears the patient could die from his injuries. Dr Jonathan treats a critical footy player after an on-field collision. Nurse Lucy worries a pregnant patient can't feel her baby move.

Dr Fiona has to stop a young man's heart beating, in order to save him. A patient with a gruesome head wound has Dr Sarah on full alert. Nurse Julie helps a smitten young couple who spend most of their first date in emergency.

Dr Mark tries to help a car crash patient under police guard, but the man appears to be hiding something suspicious in his underpants. Dr Miriam examines a cheerful 82-year-old biker with fractures, who suddenly takes a turn for the worse.

Dr Mark assembles a crack team to save a man with life-threatening gunshot wounds. Dr Jonathan suspects a surf-coach has a shattered leg from a horror car crash, which could spell the end of the young man's career.

Dr Emma's patient could lose her fingers after a high-speed car crash. A gunshot victim has Dr Michael on high alert. Dr Michelle stitches up a young man who walked into a wall while checking his phone.

Security crash-tackles a violent man trying to smear blood onto hospital staff. Dr Jonathan's car crash patient wasn't wearing a seatbelt, but she's more worried what her dad will say. Dr Mya's scared patient has an unstoppable nosebleed.

Dr Steve's young patient could lose his hand after a shocking accident at an abattoir. A severe asthmatic struggles to breathe, but Dr Bjorn suspects another trigger. A wayward spider sends a high-speed road crash victim to Dr Jana.

A life hangs in the balance as Dr Emma rushes to meet a critically injured road trauma victim at the helipad. Dr Lauren treats an American schoolboy who plunged 10 metres down a cliff and is bleeding heavily from an open fracture.

Dr Miriam treats a heavily pregnant mum-to-be who collapsed at a train station platform, falling face-first and landing on her stomach. Dr Sarah fears for a cyclist who was hit by a car and can't feel his feet.