Ester and Polvina rush to school and smack into the Turtle King; his crown getting knocked right off his head and snapped up by a boat's hook. The girls set out on a mission to retrieve it for him. / Ester and Marli confidently set out on their first babysitting job. But it all goes horribly wrong when they lose the Sea Lion King's son, Naimo, who disappears in search of his favourite toy.

Tensions erupt between the girls when they discover a young fish that needs taking care of. Each princess feels that she should be the one to look after it and their friendship is tested. / Ester and Tubarina can't find out what's troubling Polvina. Why does she suddenly fall ill every time they begin to rehearse for the school concert? Polvina faces the challenge of admitting to her problem.

Ester loves bringing home stray animals and fish. The Starfish Palace is fit to burst with her friends. Ester's mother, the Starfish Queen, puts her foot down. If Ester brings one more friend home, then everyone has to go! / A gathering of Hammerhead Sharks is about to take place near Salacia. They ask Marcello to take them when he goes to the gathering. The trouble is that Marcello isn't going...

Tubarina's brother, Veto, is coming home. Tubarina isn't overjoyed because everyone's attention is on him! Tubarina discovers a secret of Veto's, but will she really blackmail her own brother? / After reading through old histories, the girls discover that there was a Barracuda Kingdom which is now lost. The girls are ecstatic at the idea of searching for a Lost Kingdom.

Ester finds a strange thing that's dropped from Dryland down into Salacia. At first the girls don't have any idea what it could be, until Ester plays around and puts it on her head. It fits perfectly! / The schoolyard is in uproar as a huge argument takes place. It seems Tubarina started it, but only after she was hit in the nose with a big ripe Dingleberry!