Ares depicts an alternative canon following the events of the first season of the original Inazuma Eleven anime after their victory in the Football Frontier, with the alien attack from the second season never occurring. The series focuses on the forward Asuto Inamori and his team, Inakuni Raimon, which is made up of players from the remote Inakunijima Island. Needing to maintain their club, they have replaced the original Raimon Eleven as Raimon Junior High's soccer team and compete as underdogs in the annual Football Frontier youth tournament.