Tripp Campbell has a dream - he wants to be the lead singer in his favourite '80s rock band, Iron Weasel. When the band comes to town he has one chance to convince members that he should be their new lead guitarist, so he hijacks a school assembly to get the down-on-their-luck group a gig. But winning a spot in the band is just his first hurdle - he needs to get his mother on board with his new career path, and, of course, he needs to get the band some actual bookings.