Big Sky is centred on the adventures of the pilots of a small aviation company in Australia called ""Big Sky Aviation"" and the battles of the owner to keep the company running.

Every day is an adventure for the pilots at Big Sky Aviation. A high-spirited bunch to start with, they can't help but relish the kind of job that sees them one day flying to a medical emergency on a remote property deep in the outback, the next on a tricky city mission and another soaring over some of the most beautiful tropical coastline in the world.