The engineer MacAllan designs a tunnel, which will join America and Europe together on the seabed. A group of American billionaires are financing the gigantic project, but the construction of the tunnel is proving to be as tedious as it is dangerous. MacAllan's worst enemy is the speculator Woolf, who had embezzled the money for the construction and who is attempting to cover up his crime by carrying out acts of sabotage. Also filmed in 1933 in a French-language version, LE TUNNEL, and remade in 1935 in England as TRANSATLATIC TUNNEL.

A musician and his conductor clash in this Bavarian film classic; Mixed-up music sheets and mismanaged minutes. Miscommunication is brought to extremes by expert comedians.

The violin virtuoso Ferdinand Lohner is lonely and depressed after the death of his wife. But then he gets to know the much younger Irene and forgets all about his dead wife, marrying the young tart soon after. Irene moves into the house in the mountains, where Ferdinand, his son Heinz and his former mother-in-law Mrs. Leuthoff live. The bitter Mrs. Leuthoff makes life difficult for Irene, since she had no way of preventing Ferdinand from re-marrying after her daughter bit the dust. When Ferdinand conveniently goes out on tour once again, Irene has to sit at home with the bitter woman. One day, Irene’s cousin Gustl comes on a visit and Mrs. Leuthoff takes the opportunity to “accidentally” let slip to Ferdinand, that his current wife is a whore. As if living with your current mother-in-law isn’t enough to deal with!

Kiki who has a walk-on part in a show, is in love with her director, who doesn't notice her at all. She settles into his home and causes him to break up with his lover, the star of the show; and finally manages to make him love her.

To resolve a feud between two villages over a horse, the burgomasters propose that a man from one town marry a woman from the other.

The absurd goings-on of a by no means ordinary hair salon, where men with great beards wait in vain for a shave while the barber takes a nap.

The title alludes to the popular 1925 song I Lost My Heart in Heidelberg composed by Fred Raymond with lyrics by Fritz Löhner-Beda and Ernst Neubach. The film taps into the nostalgic reputation of Old Heidelberg.

A small town official in pre Weimar Germany stands in opposition to any progress in his area, but is challenged when a stage impresario who looks just like him, arrives.