In the first part of the acclaimed Sissi trilogy, Romy Schneider makes an impressive starring debut in the delightful Austrian comedy SISSI. The titular heroine is a preteen 19th century lass of noble birth, who charms everyone she meets. Especially impressed is young Franz Joseph, emperor the Hapsburg Empire. When Sissi comes of age, the emperor pursues the girl romantically, with fascinating results.. The Sissi trilogy presents through heartwarming storytelling and undeniable visual beauty a Cinderella story in scrupulous detail, in three chronologically biographical films that, together, take nearly six hours to watch.