Self-destructive musician Lucky hasn't spoken to his family in years, but he packs up his battered old piano for a 4,000-mile road trip across Australia when he hears his estranged mother is dying.

Lucky struggles without his anxiety medication. While waiting for a chemist to open in Port Agusta, Meg picks a fight with bikers at the pub.

Meg is beside herself when she loses all of her's and Lucky's money. To make matters worse, they then run out of petrol.

Waiting for their ute to be repaired, Meg and Lucky join a campground party on the Great Australian Bight, but the night takes a nasty turn when Lucky discovers a suicide note.

Lucky starts to think he should give up when Meg takes off with his piano. Then, a snakebite gives him the wake-up call he needs.

A transformed Lucky prepares to make a major sacrifice. But it's not long before some bad news sends him spiralling into despair.

Lucky finds himself paying the price for Meg's misdemeanours. But that's just the start, things are about to get a whole lot worse.

There's tension as Lucky reunites with his brother. As Meg tries to smooth things over, she learns why Lucky had to bring the piano.

After escaping the commune, Lucky and Meg race back to Sydney hoping to make it in time to meet Billie at the airport.