It's not my story

There was once a shooting star destined for the heavens in the world of basketball, a potential third in the G.O.A.T. debate, alongside LeBron and Jordan. That was until he vanished without a trace, and disappeared off the grid. His tales eventually became myths, and he a spectre. This is the story of his nephews who he took into his care and made them his proteges. 30 years after his disappearance they make their debut.