Đăng Hải is just another undersized, overlooked boy lost in the crowd. Lacking physical advantages and never taken seriously on the court, he suffers a humiliating defeat on his first day in gym class — dunked on and publicly disrespected by a star player who mocks not only his skills but even takes a personal shot at his family. Shaken but not broken, Hải swears to never feel that powerless again. With a burning determination, he dives headfirst into basketball, training relentlessly, studying the game obsessively, and learning to maximize every bit of his small frame. As a member of the underdog team Lyon Griffons, Hải begins his journey from the bottom of the school league pyramid, facing countless challenges, doubters, and rising stars. But in a world where talent shines bright and egos burn hotter, does grit alone stand a chance? Hải is ready to prove that heart beats height — and that even the smallest flame can start a wildfire.