Tony Beets gambles millions to overhaul his operation. Rick Ness needs a wash plant that matches his big ambitions. Dave Turin hunts for new ground, and Fred Lewis finds his second season on thin ice.

Tony Beets battles the Klondike winter to secure a monster excavator. As the competition for ground heats up, Fred Lewis searches for the motherlode in Nevada, while Dave Turin builds a custom rig to give him an edge.

Rick resurrects Monster Red to capture nuggets with help from master fabricator Freddy Dodge and Tony builds a massive excavator. Dustin Hurt returns to Haines after a devastating landslide and Parker remembers those who lost their lives.

Tony Beets sets his sights on a $3.5-million monster dozer. Dave Turin hunts for a claim with his new Mad Max prospecting machine. To hit his 2000-ounce target, Rick Ness tests a pioneering drilling technique.

Tony Beets fights the Yukon winter to build a monster dozer. Fred Lewis prospects a claim that could be too good to be true. Dustin Hurt tries to reach his remote mountain camp to determine if he'll be able to mine this season.

Dave Turin prospects virgin ground on a snow-covered claim in Idaho. Fred Lewis explores an underground river in search of gold. Dustin and Carlos battle deep snow and brutal weather at McKinley camp.