The first storm of summer arrives to rock the fleet. New rivals Chris and Joe battle over big gold. Vern's diver faces a deep-water emergency; Kris orders the Mistress to put her crew on notice; and Shawn makes a promising discovery.

Tensions rise as the mining season hits its midpoint. The Kellys launch the All-In, and Zeke hits "the cheese." But Shawn struggles to find a pay streak, and an alleged claim jumper sets up on the Tomcod Claim hotspot.