The plot is about King Dedede and Tuff suffering from toothaches and having to see Dr. Yabui about getting their cavities filled, despite both of them being very squeamish about it. Dedede eventually orders a Monster (Hardy) to do the job anyway as usual since he doesn't want to see Yabui, but he is just as scared about it, if not more. Hardy treats everyone, and puts a drill near Tuff's cavity, but doesn't drill the tooth. It just scares off the things that caused the cavity. Dedede wanted his cavity fixed another way, so Dedede fled from Hardy. Hardy went crazy when he realized that Kirby has no teeth, and ends up being blown away, so Dedede ends up at Yabui's screaming his lungs out when he gets the treatment the hard way.