As a new Industrial Revolution sweeps Nome, the miners elevate their operations. A cracked spud may mean disaster for Shawn. Kris Kelly struggles with faulty equipment. Chris McCully has a blockbuster start, while Vernon buys an unorthodox dredge.

Chris McCully embarks on a three-person, 15-hour diving marathon while Kris Kelly panics when the Mistress takes on water. Vernon and Emily both try new, unconventional divers. Mr. Gold successfully returns to work on the Myrtle Irene.

The fleet scrambles to get mining before an approaching storm. Mechanical difficulties plague Mr. Gold and Kris Kelly. Chris McCully has a close call while diving. Vernon attempts to get back in the gold game.

Pressure mounts as a Nome-wide diver shortage forces Chris McCully into a dangerous solo dive and Emily's crew into river dredging. The Kellys fight over the lack of progress on their newest dredge, the All-In.

Facing dangerous conditions, the entire fleet rolls the dice to save their season. Mr. Gold gambles on shallow ground. Chris risks it all on another solo dive as Zeke doubles down. Kris tries to power through a crisis.

Shawn's negotiations with his father for the inland mine implode. Emily deploys her new diver while Vernon searches for one of his own. Chris dives solo again. Reaper Nation's new dredge might help them compete with Mr. Gold.

A potential disaster plagues the Kellys, prompting a bail-out from Chris McCully. Shawn and Vernon try their luck in deeper waters. Team Emily strives for a double dive.

As the countdown to the storm of the century begins, the fleet races to mine. Reaper Nation hits deeper waters while Shawn, Emily, Vernon and Chris all fight large swells to get gold until the bitter end.

As the miners try to secure their operations, a catastrophic storm rips through Nome, devastating the community and leaving it forever changed.

In the critical final days, Kris stays laser-focused on his mission while brother Andy struggles aboard the All-In. Shawn chases a disappearing hot spot. Vernon returns to deep and dangerous waters. Fortune's Fools In the critical final days, Kris stays laser-focused on his mission while brother Andy struggles aboard the All-In. Shawn chases a disappearing hot spot. Vernon returns to deep and dangerous waters.

In the fleet's last push for gold, Reaper Nation fights to mine until the cold, bitter end. Shawn reaches for gold in deeper waters. Emily must depend on her last remaining diver. Chris and Zeke debate whether to mine in murky conditions.