The film recounts the last years of the life of the Austrian Crown Prince Rudolf of Hapsburg until his tragic death in Mayerling. They are highlighted the difficult relationship with his father, the Emperor Franz Joseph, and the affectionate bond with his mother, the Empress Sissi; the failed marriage to Stephanie of Belgium; and his romantic relationships with the prostitute Mizzi Kaspar and the young Baroness Mary Vetsera, together with whom he will die in Mayerling. The film endorses the reconstruction according to which the Archduke apparently committed suicide, overwhelmed not only by a role that weighed and imprisoned, but also from the disappointment due to the low esteem that his father would usually express.