"SUMO GIRL!" is a program that was produced and aired in Aomori Prefecture. The sumo team at Goshogawara Commercial High School once reigned as national champions. However, in 2014, the team almost was disbanded, as it became an empty one without a single member. The team was saved when 2 novice boys joined, along with a girl named Yoshina, who jumped in as the team's assistant. Urged by the will to be stronger herself, Yoshina began practicing sumo herself. This documentary follows Yoshina throughout her high school life, as she dedicates her passion and energy to the sumo team.