Shirobon blows up Shout's ramen shop trying to help with cooking and accidentally burns out their special space coal. When Shout learns they can mine for more coal on Planet Kurodaiya, she takes the Jetters out to do some mining. A worker of the mines happens to have the only unique pick axe of the universe, and becomes the target of the High-Hige. When the two teams collide, Shirobon must go up against their second created foe, Top Bomber, and protect the pick axe.