Dredgers brave the frigid Alaskan waters hoping to strike gold.

A rainy day leads to trouble when Shawn gets hurt in a bar fight.

Sunny weather brings all dredges out to sea, but conflicts quickly arise.

Contestants from all walks of life compete for glory and $25,000 cash in an arena unlike any other. A dodgeball deity tests his mettle. A fitness model shows she can do more than just look the part. "Aaron Rodgers" tries his hand at a new ballgame.

Contestants compete for a shot at $25,000 as they brave a battleground.

A tattooed trainer flexes her muscles against a martial arts master. A benchwarmer in search of a comeback takes aim at a sporty single mom. With $25,000 on the line, only the strong survive the Thunderdome.

The Kilchers finish Atz Sr.'s legacy rebuild and Eivin suffers a loss.

Pandemic parenting pushes Eve to her breaking point as winter approaches.

Atz Sr. reveals his legacy build after months of backbreaking effort.

The Browns complete the main house before a massive wildfire strikes.

A wildfire rages on Palmer Mountain, threatening the Browns livelihoods.

The Browns film their locked-down lives on the mountain before the fire.

E.J. and Jeff are trapped in a pitch-black cavern surrounded by bears.

E.J. and Jeff are surrounded by lions on South Africa’s Wild Coast.

E.J. and Jeff face elephants and hippos in Botswana's Okavango Delta.

The guys have seven days to raise their '67 Firebird from the ashes.