To protect his identity from other teams who want to recruit him, Sena is forced to publicly assume the role of the team secretary and enter the field under the pseudonym of "Eyeshield 21" wearing a helmet with an eyeshield to hide his features. The makeshift team initially takes part in the spring football tournament hoping to win through the strength of their new "secret weapon". However, the extremely weak team is eliminated early by the Ojo White Knights, one of the best football teams in Japan.