Tentacolino recalls his memories of the Titanic while Smile and his crew find some goats and explore the island in search of other inhabitants.
Top Connors finds a secret cave that looks like a pirate's hiding place. Ulla finds out that unwelcomed humans have landed on the island.
Don Juan discovers that their house has disappeared while Ulla and Francis give them a good scare. Ronnie asks for help from King of Atlantide.
The puppies of Chantilly and Smile have been born as well as the son of Don Juan and Elizabeth, which can be dangerous for the island.
The fish pay a tribute to the new prince while Ice Teeth continues searching for the treasure. The sharks have a plan to attack the island.
The attack on the island is a failure while Ronnie and Top Connors are decorated by the King of Atlantide for defeating the sharks.