Zack and Cody go to Japan to visit their mother, who is staring in a Japanese soda commercial, but Carey finds the soda disgusting to drink. During the filming of the commercial, Carey is able to drink the soda without throwing up, but Zack causes trouble on the set by dressing up in a gecko monster costume. Zack, Cody, and Carey are forced to become unwilling taste testers of the soda in order for the damages to be paid. Meanwhile, Woody defeats a sumo wrestler in a competition and Bailey tries to restore the sumo wrestler's confidence. Elsewhere, London tries to avoid going to the dentist by disguising herself as a vending machine and a first aid kit, but Mr. Moseby sees through London's ruse and he takes her to the dentist.
—dawsonpersi