Mummy Pig tells Peppa and Rebecca that diving boards are for grown-ups. However, they could've been allowed to jump off the smaller diving board since any age (except under 4) can jump off diving boards. Later, Rebecca, Richard, and Mummy Rabbit come to the pool also and get in the water. Mummy Rabbit gives Richard a board to splash with, and Mummy Pig gives a board to George as well, as they began bumping and splashing everyone else. Peppa claims that big children don't splash, she and Rebecca try to dog paddle to the near end of the pool, but they rather get tired and stop.

Narrator: Peppa and her family are at the swimming pool. Daddy Pig is wearing his swimming costume. Mummy Pig is wearing her swimming costume. Peppa is wearing her swimming costume. Peppa thinks the watering can is for babies, so she decides to jump off of the diving boards, but Mummy Pig stops her because it is for grown-ups. Daddy Pig tells both of them to cheer up and watch him dive, as well as him telling them he has won trophies for it when he was young, and thinks he still is fit. Peppa and Mummy Pig warn him not to splash the rest with water. But Daddy starts jumping very high off the diving board, and… has made a little drop into the pool. There is no entrance to the pool. This is probably due to the series being from a child's perspective. Peppa: Big children don't splash. We're very good at swimming. When George and Richard are older, they'll be able to swim like us. Won't they, Rebecca? This is the first time when George cried 4 times in this episode, and this is the second time where Richard cried, making a total of 5 times for the most characters to cry in the series. the next episode where George cried 4 times was Digging Up The Road.At a swimming pool, Peppa and her family put on their swimming costumes in four changing rooms. Mummy tells Peppa and George that Daddy Pig will blow up their armbands. Daddy Pig blows Peppa's armbands, and now George's, which it is his first time at the pool and gets nervous. Daddy Pig tries to put George's foot in the water, which he cries twice after putting each foot in the water, but Mummy Pig holds George and puts both feet in the water. Daddy Pig doesn't take off his glasses when in the pool (not including when he goes underwater or jumps off the diving board). He told everyone he wouldn't splash, and the rest were relieved. Daddy does a special way to dry himself off, which he does it like a dog, splashing everyone. He has apologized, but they laugh anyway. This is the second time to only focus on The Pigs and Rabbits, the first was Foggy Day (not counting Mr Rabbit or Miss Rabbit). This is the first episode of the swimming episodes where Daddy Rabbit, Mummy Sheep & Daddy Dog is absent.