A spirited high-school football player and his friends prepare for a new season while personal rivalries and mysterious incidents disrupt the team. Strange accidents, a downed aviator, and the theft of secret signals threaten to derail the squad and place innocent players under suspicion. The youths investigate crooked schemes, trace clues, expose those responsible, and resist temptation before clearing names and restoring order. The narrative culminates in a decisive confrontation on and off the field, where teamwork, daring, and fair play resolve the mystery and settle the rivalry.