What is the plot of Kuroko's Basketball?

Context: The Teiko Middle School basketball team dominated basketball teams within Japan, winning the middle school Nationals for three consecutive years. The star players of the team became known as the "Generation of Miracles". After graduating from middle school, the five star players went to different high schools with top basketball teams. However, there was a rumor that there was another player in the "Generation of Miracles": a phantom sixth man. This mysterious player is now a freshman at Seirin High, a new school with a powerful, if little-known, team. Now, Tetsuya Kuroko – the sixth member of the "Generation of Miracles", and Taiga Kagami – a naturally talented player who spent most of his youth in the US, aim to bring Seirin to the top of Japan by taking on Kuroko's former teammates one by one. The series chronicles Seirin's rise to become Japan's number one high school team. The Generation of Miracles include Ryota Kise, Shintaro Midorima, Daiki Aomine, Atsushi Murasakibara, and Seijuro Akashi.

Answer: Kuroko's Basketball is an anime about basketball. The story starts with Teiko Middle School where 6 talented players are known as the Generation of Miracles and they went undefeated for 3 years. However, all of the players split off for high school. The protagonist, Tetsuya, is the mysterious sixth man who comes to Seirin high school and meets Taiga Kagami, who is a naturally talented American player. The show focuses on this duo beating the rest of the Generation of Miracles to become the top Japanese high school basketball team.