In the realm of professional sumo, weight classes hold no sway. It's a brutal arena where only the fittest endure, welcoming challengers of all calibers. Yet, to tread the path of a pro wrestler, one must meet a certain size criterion—a hurdle young and determined Hinomaru Ushio falls short of. Despite his diminutive stature, Ushio harbors grand aspirations of ascending to the prestigious Hinoshita Kaisan class. His lone shot at going pro hinges on clinching the title of High School Yokozuna, the pinnacle of high school sumo prowess. Time ticks mercilessly as Ushio stands on the brink: excel in the high school tournaments or relinquish his pro dreams forever. Faced with this daunting ultimatum, he shuns Ishigami High, renowned for its sumo pedigree, and opts for Odachi High. Here, alongside the steadfast Shinya Ozeki, Ushio must forge a sumo club from scratch. Despite Odachi High's status as the ultimate underdog in sumo, Ushio must rally every ounce of his resolve to carve a path to professional glory.