The pups must come to the rescue when Sweetie plans to steal the royal throne so that she can rule.

Cap'n Turbot's boat, the Flounder, is sunk by a large pink octopus.

The Sea Patrol has to rescue Carlos and Tracker, when they get stranded on an island in the search for buried treasure. Unbeknownst to them, a long-gone pirate hypnotized the animals into protecting the treasure and Carlos gets carried off in a treasure chest.

Cap'n Turbot, Ryder, and the pups visit the merpups' undersea kingdom.