Tai is released from prison and discovers that his twin brother Tan has been unconscious for a year. Tan has ventured into the realm of Fireball, a violent basketball game staged by underground criminal gangs, in order to raise funds for Tai's early release. However, another player, Tun, mercilessly pummeled him. Tai accepts to join Den's squad in order to assist Den in locating the culprit responsible for his brother's hospitalization. Tai is befriended by his teammates: Singh, a Thai boxing champion determined to establish his superiority; Muk, a Thai-African guy in need of money to maintain his family; IQ, a cheery character who only wants to help his mother; and K, an old buddy of Tan with a mystery past. He and his comrades must put their lives on the line and fight their way to the final round of the deadly Fireball championships so Tai may exact revenge on the court.