Hi Hi Puffy AmiYumi

After Yumi makes a mistake that leads to their van crashing into the dumpster, Ami discovers an all-knowing Koi fish. Yumi becomes obsessed with it to avoid any more mistakes.

Kaz almost runs over a squirrel who left his home due to Eldwin Blair chopping down trees for toothpicks, Ami and Yumi decide to help the squirrel get his home back. Later on, Ami chains her and Yumi to the tree. Eldwin starts up the bulldozers and chases them through the forest until he surrounds them. Ami manages to convice Eldwin to save the tree.

After Yumi has an accident with the microwave, she thinks she's Ami, which leads to Ami and Kaz trying to get her back to normal in any way they could think of.

Ami and Yumi come back to their tour bus and find a note that Kaz left saying that he had to go to the hospital. Ami and Yumi go to one to visit him but the nurse kept saying that visiting hours aren't right now and they have to wait until the end of next month. Ami and Yumi keep trying to get in the hospital with the nurse chasing them. They get in a room with a guy who looks like Kaz but was taller. Eventually, The nurse catches them and throws them out. Ami and Yumi are sad but when they come back to the tour bus they find Kaz there and they find out that Kaz just went to the pet hospital for their cats.

Kaz enters Ami and Yumi's cats in a contest but turns out the cat contest isn't until October, so Kaz decides to enter the cats in a dog contest by pretending that they're dogs, but it backfires when the cats are told to speak and accidentally meow, and they and Kaz get chased out by the dogs.

Unlike Ami and Kaz, Yumi has never won a trophy before. Intent on winning one, she enters a tofu-dog eating contest. When she entered her first contest she lost. She challenged the champion to a rematch and if she won she got the champion's golden teeth, But if she loses, she and Ami must spit polish and clean his teeth for the rest of their lives. When the champion and Yumi get ready, Yumi starts out slow and the champion is winning but Kaz says mentions the baseball game they went to and Ami starts playing baseball. Yumi starts eating the Tofu-dogs fast and ends up winning the champion's gold teeth.

When Yumi's midnight hunger strikes she wants a Pink Palace cheeseburger so Yumi convinces Ami to drive her to a Pink Palace location. They end up going everywhere because the other locations get into trouble.

When getting attacked by fans after shows. Kaz hires them a body guard. When the body guard becomes too protective about his clients things start to go wrong.

Kaz writes a song, but Ami and Yumi don't like it, but hides those feelings not to disappoint Kaz.

Yumi's hands get RSI while signing autographs and can't use them, so Ami decides to help Yumi out. Yumi then takes advantage of Ami.

Ami's tired about not having the group being very clean. So Ami is obsessed in cleaning their trailer. But she now can't find her drum sticks so can she find them?

A magician named Dr. Mysto tries to hypnotise Yumi and cure her of nail biting. He hypnotises Kaz by mistake.

Yumi and Kaz accidentally sell Ami's diary to an auction, the diary is then bought by Harmony so then Ami and Yumi must become Harmony's best friend in order to get the diary back.