4x22 - The Flying Doctors

A girl gives birth to a little baby boy in the Nomad on the way to hospital. She doesn't want to involve the father who is a jackaroo who shot through as soon as he heard he was gonna be a dad. But the baby's grandfather, the girl's dad, is convinced the baby is the new Messiah. He interferes a lot and the mother gets really upset about it. One day he just wanters off into the bush, and isn't found...