Disaster looms for the Hammersley crew when a fire erupts in the engine room, after the mascot is stolen by a rival Patrol Boat crew. Meanwhile, an eye injury threatens to destroy Charge's career, and ET takes a vow of chastity in a desperate attempt to prove himself to Nikki.

The Hammersley saves sailors from a sinking ship, only to learn they are diamond smugglers who will kill to save their cargo. Swain is kidnapped by smugglers and left trapped in their sinking ship. Will Buffer rescue him before the ship sinks? Mike is reprimanded by Navy brass over his obsession with the Bright Island mystery.