Bruno Jasieński

Unbearable heat. A young boy is doing to his friend unusual favor - pretended to be him, visited his grandmother who has senile. A woman takes him for a walk to a place that evokes memories and she tell him about the biggest mystery of her life.

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.