The action takes place in Sofia, in a summer, during the WW II. Children Kalin and Gundi sneak into a yard where they meet Svetla and Sami, a small Jewish boy. The four plays together. Kalin`s most cherished dream is to enroll in a high school. The boy is ready to take any job to get the money he needs to buy a school uniform. Kalin`s father signs on for a job at the same factory where Svetla`s father is canvassing for a strike. Kalin`s father shuns the strike fearing that if involved, he may do harm to his son. The kids know nothing of their parents` specific activities. When the police arrive to search Svetla`s home, they manage to hide a suitcase full of leaflets and radio transmitter. Kalin gives up the high-school idea and urges his father to join the strike. The workers go on strike and Svetla`s father is arrested. The summer holiday is over. Kalin and Gundi will start work at a furniture factory. Svetla will leave with her mother, and Sami will return home, lonely once again.