High school hotshot Zach Siler is the envy of his peers. But his popularity declines sharply when his cheerleader girlfriend, Taylor, leaves him for sleazy reality-television star Brock Hudson. Desperate to revive his fading reputation, Siler agrees to a seemingly impossible challenge. He has six weeks to gain the trust of nerdy outcast Laney Boggs -- and help her to become the school's next prom queen.
Rock Star tells the story of Chris Cole and a rock band called Steel Dragon. Cole is a photocopier technician by day, and the lead singer of a Steel Dragon tribute band called "Blood Pollution" by night.Internal struggles between the Steel Dragon band members culminate with the firing of the lead singer, Bobby Beers and the starting of recruitment sessions to find a new vocalist. Loosely inspired by the true story of the heavy metal band Judas Priest.