Celebrity judges Howie Mandel, Mel B, Heidi Klum and Howard Stern narrow down the competition at Planet Hollywood Resort & Casino in Las Vegas. The acts that made it through the first round of auditions must again perform for the chance to compete for America in the live shows. Nick Cannon hosts this variety competition series which features a colorful array of hopeful future stars as they compete for a chance to win a $1 million prize and become the most talented act in America.