Kakeru Aizawa is the manager for his middle school football team and younger brother to football prodigy Suguru Aizawa. His childhood friend, Nana Mishima, returns from the United States of America and enrolls into his class. That night, Kakero secretly practices football at the park and is challenged to a match by a masked stranger. The next day, Suguru has Kakeru enter a football match for the chance to join the regulars as a forward.