Poland, 1943. Christian Heidert is an ambitious Nazi doctor and a passionate violinist, obsessed with an elusive musical piece he heard in his dream as a child and firmly believing that, if embodied, this concerto will place him in the same league with the greatest composers of all time. Jassengro, a Romani inmate of the concentration camp AU where Christian works, is also a violinist who, being able to read people's minds, has the power to influence their feelings and actions with his violin play. When the two, both deeply involved in the gruesome and grueling reality of the camp's everyday life, become aware of each other, Doctor Heidert decides to use Jass's talent for enhancing his own music. Jass, in his turn, is determined to make the most of doctor Heidert's fragile ego.