An Austrian officer falls in love with a Polish girl at a Saint Petersburg New Year's Party in 191, but war soon breaks out.

Mutz Hagedorn has just graduated from grammar school, much to the delight of her aunt Jenny, who cares for her like a mother. Then she learns from notary Strohbein that she has inherited the hotel “Zur Jungfrau” from her uncle, it is located on Lake Constance in Üttlisborn. On the way there, she meets the winsome Konrad on the train. Both have the same destination, only at the train station, their paths split. When she then stands before “her” hotel, she’s appalled. The “Jungfrau” is an old, dilapidated eyesore, because people with taste put up at the “Mönch”, which is owned by the Leitner family. Both families have been at odds with each other for years. Then, Mutz learns from Konrad that he as well is a Leitner and the owner of the “Mönch”. Now, she wants to be victorious, win the trial once and for all. Konrad accepts the challenge. Firstly, the “Jungfrau” is turned into a modern hotel in no time.

On the eve of the Russian Revolution, a performance of "Tosca" is taking place at the opera house. The artists and staff are too engrossed in their work to notice the unrest in the streets. The leading roles are played by Marina Marta and René Areno, who are also lovers. However, Marina has another admirer in Captain Alexander von Harbin. When, during the final performance, the insurgent communists suddenly storm the opera house, Alexander seems to be Marina's last hope…

The stand-alone opera singer Carmen Casini dare not admit to her adult son, the spoiled race car driver Cecil, that she ruined her voice on a stormy day at the racetrack and that her career is thus at an end. Meanwhile, Cecil has fallen in love with the pretty Colette … without suspecting that her father, the wealthy Bartell, was a former lover of his mother and that he’s Cecil’s daddy. Thus, both Carmen and Bartell try to prevent the unfolding love-relationship between brother and sister, because this ain’t the Ozarks, you know! Only after the unhappy Cecil tries to commit suicide after an argument with his mother do Carmen and Bartell realize they still love one another. Suicide attempt be damned; let’s go out on a date! A movie that screams “Fun for the whole family.”

Sabine Heitmann, the young boss for the shipping company Heitmann, has become friends with Michael, the First Officer and Helmsman of the ship, the "Sabine Heitmann". He only knows Sabine by her first name and doesn't know that she's the boss. When he discovers the fact, however, he gets pissed and refuses to accept his promotion to Captain. Then the shipping company gets a lucrative offer: In a competition with another shipping company, they need to reach Baltimore in 18 days and pick up some freight. Whoever can move their rear ends faster, gets the very profitable contract from an American firm (correct me if I'm wrong, but didn't this sort of thing sink the Titanic?). Together with Michael, Sabine comes up with a plan, which should have them win the contest. The upshot? She wins back his heart and he becomes Captain.

Miss Annemarie Tessmer is a clerk in the house of the manufacturer Herman Schilling and she is indispensable. She is exploited by all the family members and her own life is completely in the background. Herman Schilling wants his daughter Thea merry with the representative for foreign affairs Dr. Richard Rauch. However, after a number of dramatic complications, Richard chooses for the good, selfless and hardworking Annemarie.

Alexander and Poldi, the “Sunday Children”, work as a headwaiter and servant in the Palasthotel in a southern German spa resort. Like many people, they dream of one day being rich. But when their lottery ticket actually wins, their friendship is destroyed, when it turns out, that Poldi stopped buying tickets to save money. Both then fall in love with beautiful Steffi, whose aunt won’t hear of anything other than a marriage to a rich man. Steffi gives her heart to poor Alex, while Poldi actually receives a fortune. When a crook ends up taking his money away, Alex helps Poldi to convict the fraudster and get his money back.