Shawn's obsession with the bluff reaches a breaking point; Zeke and Emily have enough fuel for one more trip to Sledge Island; Nome, Alaska, newcomer George Young seeks his fortune on the Bering Sea floor.

Anxious to reverse his fortunes, Zeke undertakes a perilous solo dive; the Kellys risk a 13-mile trip in their rinky-dink dredge; George grows desperate to prove is capability as a diver before his brother leaves Nome, Alaska.