Ater pigging out on chips meant for Kirby while watching Channel DDD reruns, King Dedede blows up to such a size that he can’t even move. After a visit to the doctor for the king, Tiff decides to investigate the chips and learns they have no manufacturer’s ID, so they MUST have been made by NME. Unfortunately, Kirby gets into the chips as well, and soon ends up as fat as Dedede. With both of them too bloated to move, the NME Salesguy sends in a tough, hyperactive fitness trainer called Max Flexer… who turns the throne room into a fast-paced aerobic disco show! Max Flexer has to whip them into shape, but some of his methods are far more rigorous (and dangerous) than any normal exercise regimen.