"Women's SUMO" is now a super-popular sport that splits popularity with soccer worldwide. Eriza is a young gymnast who admires Women's SUMO. Although she loves gymnastics, she feels a sense of emptiness in performing alone. Being the only daughter of a professional Sumo stable, her parents strictly forbade her from doing Women's SUMO, but Eriza, wanting to pursue her dream, began "dojo-breaking" (challenging other dojos) while hiding her identity. One day, her fate begins to move after she visits a certain Sumo club… ?