Yumi is chosen to be a movie star, but Ami has to be her stunt double.

Yumi is mistaken for a secret agent and must handle the real Agent Y's job.

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.

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.

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

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?

Ami asks Wall to help out with the band, but he is not good at it.

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.

After coming to life, Ami and Yumi's favorite manga characters battle each other. The fight gets out of hand and it is up to Ami and Yumi to stop them.

When Yumi is stealing all of the spotlight by her badness, Ami gets jealous and purchases a pair of haunted sticks from the pawn shoppe, but it's Crazy Stix's Sticks, and Kaz and Yumi must get those sticks away from Ami before things get worse!

In their childhood years, Ami and Yumi arrive at Camp Youwannasushi and are met by Atchan, who tells them about Rumaki the bunk monster. Yumi is grabbed by Rumaki and Ami and Atchan go under the bed to save her. They manage to save Yumi, but she does not believe them because she was in the sack for the whole episode.

The tour bus is acting erratically and Ami and Yumi go inside to find out what is wrong. They find out that the man who sold them the bus had moved into its carburetor. The girls get him out and the bus is fine.

Ami must fight the Black Knight to see who will defend Kazalot.

Ami and Yumi have to pay the rent for the bus when Kaz came up with the idea and they get a job as taffy makers at Wacky Wally's candy factory.

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.

Yumi needs a new guitar and must accomplish certain tasks to get one. So she meets Master Mei Pie, who sends her to get some items. She collects all the items, but realizes that she was not focusing on her playing.

Kaz orders robot-type clones of Ami & Yumi, but when he orders a whole fleet of them, it's up to Ami & Yumi to stop the robot fleet before they lose their rock-star jobs!

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

Jeng Keng and Tekirai clone themselves to get rid of Domo after failing the first time.

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 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.

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.

In prehistoric times, Primitive Ami and Primitive Yumi create their own music, and Primitive Kaz tries to get the two to join together and form a band.

While focusing on Puffy AmiYumi, Harmony is disturbed by a member of the Junior Tapeworms and she soon becomes a member and is always getting a badge for every achievement she does.