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 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.

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.

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.