12勇士13-year-old Marek shoots videos with social themes, making him an outsider among his classmates. At home, his peaceful relationship with his mother is disrupted by his mother’s new acquaintance. In the most sensitive phase of his life, he meets Tereza. Despite their social differences, they develop a liking for each other. Soon teenage games spiral out of control with a simulated kidnapping, culminating in running away from home. They board a train and a series of spontaneous adventures ensue until they get lost in a labyrinth of endless freedom.