Mack & Moxy jump into action with Trooper Lauren and bump into a friendly teenager named Blump who spends his time playing video games and eating candy bars. When asked to help the Heroes find the Great Helpee at the top of the mountain, Blump slumps and sighs. But once he breaks a sweat and gets into shape bike riding, hooping, and hiking up the hill, he reaps the rewards of exercise. As always, Shelfish Sheldon tries to beat them to the Great Helpee so he can keep all its happiness for himself.