The arrival of a prickly new Chief Nurse throws the whole SkyMed flight crew off-balance - until an unexpected accident causes a shocking loss.

As the SkyMed crew struggle to say a difficult goodbye to a fallen team member, the loss forces each of them to question themselves in different ways.

A documentary crew arrives to follow the SkyMed flight crew, creating turbulence among the team - especially when Stef and Chopper are forced to work outside the lines on a difficult call.