Las Betizú are an unassuming underground band. A series of circumstances leads them to compete in Uztarrock, the biggest festival in the galaxy, organized by Buff Alu, a famous magnate who owns almost all the galactic record labels. Surprisingly, Las Betizú will be selected as the breakthrough band of the year. But one of them accidentally realizes the sham that is Buff Alu's musical empire, and Las Betizú are accused of plagiarism and rejected by their fans. They soon have to come up with a plan to save their musical career...