Nineteen-year-old Kevin plays guitar and just lives in rock-and-roll. But to be a rock God in a small sleepy town and is not easy, and when your father is the conductor of the orchestra of the city - it is impossible. During the preparation of the orchestra to the next music contest, the father unexpectedly gets to the hospital and Kevin has to take on his music duties. At the same time, the city mayor decides to get rid of the rock band. Then Kevin offers him a deal: if he wins the contest with the orchestra, the mayor will not pay off the rock band. Now Kevin has just four weeks to remake the orchestra in his own way, to practice rock songs on classical instruments and completely turn their routine upside down. And of course his father does not have to know about it.