Alaskan dredgers brave the frigid Bering Sea hoping to strike gold. They risk their lives and their livelihoods as they dive to the sea floor and suck up gold with their makeshift hose pumps.

A bar brawl threatens not only Shawn's health but the Christine Rose's future. The Wild Ranger's luck is getting worse as they're down a man and have sprung a leak. The Sluicey's Ian calls in a friend who offers both experience and criticism.

Sunny weather brings all dredges out to sea, but conflicts quickly arise among the crew members. Shawn and his dad argue about responsibilities, while Scott continues to struggle with his crew on the Wild Ranger.

It's halfway through the season and the crews are feeling the pressure to find new gold-producing spots. On the Wild Ranger, Scott's patience with his crew is wearing thin, but they keep finding new ways to annoy him.

Tensions are extremely high as time begins to run out in the hunt for gold. Shawn's back troubles keep him from dredging, so dad Steve steps in to work the excavator.

Two dredge crews are involved in a potentially life-threatening car accident while out together on a frigid night and Cody is thrown overboard on the Christine Rose due to the incompetence of a deckhand

The end of the season is closing in and the crews scramble to finish with a profit, but infighting threatens to derail their last-minute gold-mining efforts.

Ice has arrived and the crews have one last chance to dive for riches. Zeke and Ian are solo after losing their deckhands, but they both decide to dive alone and Scott M. is thrown a lifeline after quitting the Wild Ranger.

The four dredge crews recount their experiences diving for gold in Nome, including The Wild Ranger's Scott and Vern who have a volatile reunion.

The crews confront each other about the relationships that were broken due to false accusations and betrayals of trust during their time in Nome.