Tatsuya Tachibana is a sixteen years old guy that decides to not go to highschool and devote his life to basketball. After a year, Tatsuya spend his days with Taizo and Ako, friends from middle school attended the basketball's club with Tatsuya, playing streetbasket at the playground and scraping together money in 3 vs 3 matches. One day, after a huge defeat both in numbers and money in a 3 vs 3 match against Ryoji, an old acquaintance from the past, Tatsuya is approached by a weird man named TJ. TJ is a professional Streetball player, he is interested in the way of playing of Tatsuya&Co and decide to give them the chance to training with his team. Tatsuya&Co play against TJ and his friends, realizing soon that they are still very inexperienced and not ready to enter this world. The way for Tatsuya to embrace and understand the sport loved by his late father is still very long.