"Buzzer Beater" is a science fiction sports manga set in a distant future where basketball has evolved into an intergalactic sport. The story centers around a young, talented street basketball player named Hideyoshi, who is recruited by a mysterious coach named PB to join an elite team of Earthlings. Their mission is to compete against the Universal League, a dominant basketball league composed of physically superior alien species. The Earth team, known as the Buzzer Beaters, faces immense challenges due to the aliens' advanced physical abilities and technological advantages.

Hideyoshi, despite his raw talent, must adapt to the rigorous demands of intergalactic basketball. Alongside him are other skilled players, each with unique strengths and backgrounds, including a former professional player, a streetball legend, and a genetically enhanced athlete. The team undergoes intense training and strategic development under PB's guidance, aiming to bridge the gap between human limitations and alien superiority.

The narrative explores themes of perseverance, teamwork, and the human spirit's resilience in the face of overwhelming odds. As the Buzzer Beaters progress through the Universal League, they encounter formidable alien teams, each with distinct playing styles and abilities. The matches are high-stakes, blending intense sports action with futuristic elements, such as advanced equipment and alien physiology.

Throughout the series, Hideyoshi's growth as a player and leader becomes a focal point. His determination and creativity on the court inspire his teammates and challenge the preconceived notions of human inferiority in the league. The story also delves into the dynamics within the team, highlighting their camaraderie and individual struggles as they strive to prove that humans can compete at the highest level of intergalactic basketball.

"Buzzer Beater" combines fast-paced sports action with a futuristic setting, creating a unique blend of science fiction and athletic competition. The manga emphasizes the universal appeal of sports as a platform for overcoming differences and achieving greatness, regardless of physical or technological disparities.