Watch Once There Was a Waltz for Free: How to Stream the Movie Online at 123Movies. . Banker Rudi Moebius and his counselor arrive in Wien for an arranged marriage which should solve their financial problems. Only they don't know, but Lucie Weidling is broken too, and in love with Gustl, a musician without the courage to elope. Meanwhile Rudi meets Steffi and falls in love not even knowing her name. He and Lucie become good friends and decide to help each other.