When Daisy, a spunky 9 year old girl, accidentally discovers the world of sumo wrestling she turns her family's life upside down. Obsessed with the culture of Japan and every detail of sumo, Daisy sets out to become a sumo wrestling champion. With the help of Kenji-san, a sushi bar owner and her intrepid cat Charley, Daisy begins a rigourous training program. With her new Japanese fighting name in place, Hiroko (Abundant Child), she forgets her normal world of friends, family and school.