Pint-size rap star Lil Bow Wow plays Calvin Cambridge, who lives in an orphanage run by a meanie named Bittleman (Crispin Glover). Like Little Orphan Annie, Calvin's sunny outlook and determination sustain him, though he wishes he had a family. His best pals are Murphy ("Jerry Maguire's" Jonathan Lipnicki) and Reg (Brenda Song). The orphanage bully, Ox (Jesse Plemons), pushes him around, but Calvin does not allow Ox to affect his view of himself. A pair of used sneakers in a box of donated clothes has the initials "MJ" and there is a rumor that they were worn by a tall, bald, pro basketball player when he was a kid. Ox throws them onto a telephone wire, but Calvin gets them down in the middle of a lightning storm. (Parents might want to warn kids that this would not be a wise thing to try in real life.) When Calvin and the shoes are hit by lightning, something very special happens. When Calvin wears the shoes, he can play "like Mike." Calvin ends up playing for pro team the Knights, originally as a publicity stunt, but then as a real member of the team. The other teammates are at first skeptical and hostile, but they learn to appreciate his contribution. Calvin's roommate and assigned mentor is Tracey Reynolds (Morris Chestnut), a loner who does not speak to his father and does not want to get close to anyone.