Second half of the 1970s. A few teenagers from the town of Ustrzyki Dolne, led by a charismatic and undisciplined student of the local school, Siczka, decided to become punks and get into punk rock and start a band called KSU.
After his brother dies in a car crash, a disgraced MMA fighter takes over the family nightclub — and soon learns his sibling's death wasn’t an accident.