Six young friends are shocked by the tragic fate of two children who allegedly disappeared while wandering around a forbidden place. The oldest of them, Jarda, is the most affected by the situation, as he knew the father of the missing children. He begins to investigate further and is determined to get to the bottom of the mystery. He confides in his friend Tomáš, who advises him to avoid the place. Despite his warning, Jarda continues his search, and as soon as he enters the abandoned building, he disappears. The rest of the group now faces a difficult choice: should they save their friend, even if it could cost them their lives?