Looking to join a high school sumo programme, Ushio Hinomaru shows up at the wrong school by accident, but happens to be in the right place at the right time to deal with some delinquents tarnishing the school's dojo.

Hinomaru and Ozeki need more recruits for their sumo club to reach the minimum member requirement; Hinomaru meets a student from the wrestling club.

Hinomaru and his new club members go up against Eiga University High School for their first matchup, where Hinomaru finds his rival, Kuze Sosuke.

Kirihito gives the club unusual tasks, including harvesting seaweed, which lead the members to question whether he should be their coach.

When the club prepares to train with neighbouring Ishigami High School, Hinomaru itches for a fight with the legendary Sada Mitsuki, but Tsuji has something else in store for him; Chihiro, struggling academically, meets a sumo scout.

Hinomaru decides to go to practise at the Shibakiyama Stable, but no one pays attention until he proves his prowess as a wrestler.