Yogi leads a volunteer convoy of trucks from Western Australia to drought ravaged farms in New South Wales, but Victoria's road authorities put a spanner in the works.

The past threatens to repeat itself as Steve Grahame and his convoy partner Sy Howells take on rough roads and extreme weather to make it to a remote community before the wet season leaves them completely stranded.

Brothers and fourth-generation loggers, Adrian and Neil, do their best to stop an inferno raging in Tasmania's bushland that threatens to destroy their livelihood.

Tasmanian trucker Ricky Sutcliffe puts his life on the line as he drives into a blazing inferno to rescue two trapped bulldozer drivers in the Huon Valley.

Truck drivers Ash Bryant and Darryl Armfield race against time on a critical job shifting 200 cattle over 500km of bush roads.

As bush fires threaten his local community, Mick volunteers to help others in need of supplies. Meanwhile, Sludge hauls three racers to a burn-up in the desert.

Trucker Brian dodges high-tech solar cars and battles heavy-haulage blow-outs; Sludge transports three vintage cars, worth $270,000, to a rally in the desert.

Colourful men and women get behind the wheel of monster trucks as they tackle extreme conditions over the toughest roads and loneliest highways of the Australian outback in order to deliver their goods on time.

Scott Conohan starts his shift as he long arm of the law strikes; outback house mover, Robbie McKay, rocks and rolls his way on the job; Mark Pett deals with oncoming traffic.

Steve Grahame tasks Slick with a one last desert run just before Christmas; Chaz Butt embarks on a mercy mission to farmers in drought-ravaged New South Wales.

Water Drillers Anthony and Danyelle, enlist a new team member as family life on the road tests their marriage. Slick's cross-country race home for Christmas may be in jeopardy.