Professional sumo does not have weight classes and demands unwavering strength and determination from participants. Hinomaru Ushio possesses considerable talent and a strong work ethic, but his dream of reaching the highest sumo class, Hinoshita Kaisan, faces a significant obstacle. He does not meet the minimum size requirement for professional wrestlers. His only hope is to become the High School Yokozuna, a title awarded to the strongest competitor in high school competitions. Ushio is under immense pressure and has limited time to succeed. Failing to impress in high school could crush his hopes of a pro career. Therefore, he takes the bold step of enrolling in the lower-ranked Odachi High, where he must start a sumo club from scratch with the help of Shinya Ozeki. It is a challenging journey, but Ushio knows that he must persevere with all his might to achieve his professional dream.