Jason races across a melting river to reach his crashed airplane.

As the seasons change in McCarthy, Tim is marooned at his remote cabin.

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.

Sky-high summer temperatures cause miners to search for new strategies.

The Myrtle Irene gets stuck in the mud and Elaine makes up for lost time.

Ken tries a new perspective to find new ground.

Shawn fights the shifting tide, and new diver Ben saves Vernon's day.

Tensions fly as Brad leads The Reaper into hostile waters.

Shawn goes for a ride, Kris raids a claim and Vernon loses his patience.

Shawn and Ken push their operations to the brink in a massive storm.

The Myrtle Irene's post-storm fate is revealed and Vernon mines a river.

Shawn confronts his dad for the sake of the family operation.

The dredgers scramble to finish summer strong as the season nears its end.

Kris mines an undersea trench, but a cave-in pins him to the seafloor.