While he's fishing at sea, Peppy discovers a wounded dolphin. He names it Socks. He brings it back to the Big Island where Doctor Button takes care of the animal.
Lulu and her friends are thrilled. Daddycat is going to leave them for a whole day on Paradise Island. Peppy discovers the island's Floriana fair made up of amusing plants.
While Daddycat is away, Peppy and Lulu have to spend a week at Pipa's house. The problem is that Pipa is a real pain who's even worse at home than she is at school.
Frustrated because he didn't skate as well as his friends, Peppy decides to climb Mount Jirojiro and find the Rose spring to bring back flavored ices to everyone.
In the Wonderlee Islands, when a child loses a tooth, they must bury it on the beach and wait for Pinchnose the Crab to replace it with a fantastic gift.
Sailors returning from sea say that a strange giant fish is coming closer to the islands. But no one has really seen it and no one can give a clear description of it.
To help Romeo charm Noriko for the Orchids Festival, Peppy steals a Ditty flower. This protected plant grows on the Three Springs Island and has a very peculiar effect.
After Isabelle's class on migrating birds, Peppy starts thinking that he could fly back to the land of the humans. He begins trying to build an airplane.
Peppy finds a huge slimy pip under the sand. For Lulu, there's no doubt. The pip must contain a fabulous plant and they should put it in the ground as quickly as possible.
One fine morning, panic overtakes Polar Island: the heating system has gone haywire and the ice floe suddenly starts melting rapidly, pulling down igloos and buildings.
When Peppy tells Lulu his latest dream, she gets red. And rightly so. Peppy dreamed of Casserole, the old cat he used to torment just for fun in his former life.
While strolling on Shaggy Mound, Peppy discovers a unique flower: Titania. This plant is the tallest in the archipelago and is also the foulest smelling.
An earthquake creates a small natural basin fed by a hot bubbling spring. Peppy and his friends have a great time with this natural Jacuzzi that tickles them.
Lulu receives a visit from her cousin Kapakapa. He's quite a character who has tribal tattoos all over and practices a mysterious and frightening dance: the Haka.
Very much in spite of himself, Peppy discovers an incredible cave: the walls are covered with primitive drawings, which show the life of island ancestors.