Joanna Jimbuku is a nurse. She lives and works in north Australia. Her boss is Bob Mills — a Flying Doctor. He and Joanna go everywhere in The Bluebird, Bob's plane. One morning in August, Joanna answers the phone. «Hello,» she says. «Doctor Mills' office.» Then… «A baby? Yes, I see. And you're in Woomara. OK — we can be there in half an hour.»