Bonds are tested and broken as two family teams split up. On the Eroica, Emily struggles to discipline her divers and it backfires on her. But disaster turns into opportunity as Kris buys a piece of a dredge.

Four crews rush to clean out the gold-rich Tomcod claim and an all-out gold war ensues. Meanwhile, Captain Emily Riedel and her new diver face a battle all their own.