Shawn gambles on a risky move. Kris suffers a life-threatening air line freeze up and makes a decision about his brother. Zeke attempts the most dangerous dive of his life through twenty feet of ice.

Kris' scheme to make a million off Shawn's bluff is sabotaged when Mr. Gold plots with a turncoat Kelly diver. Seek may have found his mining future, but when the ice breaks up, he'll have to move to a gold spot hot enough to save the present.