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.

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

Kaz is tired of how Ami and Yumi are playing, so he seeks the help of phantom rocker, Johnny Ghost. Ami and Yumi then get trapped in his haunted mansion.

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.

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 and Yumi win 1 million Yen. They have to think of a way to spend it all in only 6 minutes.

With the help of the girls, Kaz trains to become a sumo wrestler and has his first match.

Ami and Yumi travel back in time to become disco stars.

Julie (Lara Jill Miller) comes for a visit. She does nice things to Yumi, but mean things to Ami(Such as calling her Arthur and pretending she doesn't exist). When they go to their concert, Julie is not treated as a star. When the concert is over, she goes to a dark alley and plots revenge.