Zack and Cody visit their mother, Carey, on the set of a Japanese soda commercial. They are only there to observe, but when Zack damages the set, Carey's employer Mr. Hashimoto forces him and Cody to work as drink tasters to pay their debts. Meanwhile, Woody enters a sumo wrestling challenge, but when he wins, the sumo wrestler asks to live with Woody to restore his honor. Eventually, they get tired of the sumo wrestler, and let him win. After, Zack, Cody, and Carey quit drinking the terrible soda, and force their way back, by fighting ninjas. However, they end up accidently creating a soda that tastes good; Mr. Hashimoto forgives the debt, under the condition that he uses the creation (jellyfish/peanut butter sandwich) as his next soda.
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