"Futsal Boys!!!!!" is a sports anime centered around the competitive world of futsal, a fast-paced indoor variant of soccer. The narrative revolves around Haru Yamato, a high school student who initially lacks a clear passion or direction in life. After witnessing a thrilling futsal match, he becomes captivated by the sport's intensity and teamwork. Inspired, Haru decides to join his school's newly formed futsal team, despite having no prior experience. The series explores his journey of growth, both as a player and as an individual, as he learns the fundamentals of futsal and builds camaraderie with his teammates.

The team, Koyo Gakuen High School Futsal Club, is composed of diverse characters, each with unique skills and personalities. Among them is Toi Tsukioka, a talented and driven player who becomes Haru's rival and eventual ally. Other key members include the strategic captain, the agile forward, and the dependable goalkeeper, all of whom contribute to the team's dynamics and development. As the story progresses, the team faces various challenges, including rival schools, personal insecurities, and the pressure of competition. Through rigorous training and teamwork, they aim to compete in national tournaments, striving to prove themselves on a larger stage.

The anime balances intense futsal matches with character-driven moments, highlighting the importance of perseverance, friendship, and self-discovery. The matches are depicted with a focus on strategy, skill, and the emotional stakes for the players. As Haru and his teammates grow stronger, they learn to overcome their weaknesses and work together to achieve their shared goals. The series captures the excitement of futsal while emphasizing the personal journeys of its characters, making it a compelling entry in the sports anime genre.