A violent midsummer storm forces the fleet off the mining grounds. Shawn, Ken, Emily and Kris race to repair and improve their dredges for an end of season attack while reliving some of their most dangerous and triumphant moments on the Berinq Sea.

Shawn works overtime to cover for his exhausted crew. Kris is blindsided by the loss of his lead diver. Emily jumps in to prevent a fuel spill. Ken and George collaborate to find Myrtle a motherlode.