The film follows the 10-year-old Japanese boy Chikara and his struggle to become a sumo wrestler. His father, Harumitsu, was a professional sumo wrestler from one of Tokyo's most successful sumo club, so expectations surrounding Chikara are extremely high. Today his father owns a noodle shop where he works a lot. Their only time together is when they train Sumo wrestling. It's a very valuable time for Chikara. Chikara wants to impress his father, but when he's there Chikara get's really nervous and everything seems to go wrong. The annual national Sumo Championship is approaching and it means everything to Chikara to do well, so his father will be proud of him.