Despite his burly physique, Jason is a shy adolescent. During a class outing to the swimming pool, he is mocked by one of his classmates, who compares him to a sumo wrestler. Enraged, Jason grabs the young man and tries to drown him. The attack is violent, the punishment is announced: three days suspension. Alone at home, Jason copes with boredom and little by little learns about the Rikishis, these Japanese sportsmen considered the equal of gods. He immediately identifies with them. The journey begins.