First adaptation of Hans Fallada's novel of the same name.

A series of stupid coincidences causes the young Munich painter Paul to convert his uncle's castle into a hotel for four weeks. But he can't complain: business is good and he has plenty of guests. For exmple, there's Theo Muller with his revue troupe. For reasons of "sound", Muller calls himself "Miller", which, of course, causes more confusion. His daughter, the beautiful Evelyn, is confused with Mabel Miller, who has come to the hotel on a mission for her filthy rich father ... namely, to estimate the worth of the castle.

In the very oldfashioned town of Ostend suddenly 13 suitcases are delivered to the hotel, with a note, that O.F. will be here soon and needs 6 rooms (the hotel just has five). This event, probably the biggest in 300 years, starts a small wave of modernisation, yet everybody is wondering who O.F. is. Journalist Stix and architect Stark have an idea how to use this event. They proclaim, that O.F. is a former citizen of the town, who became a millionaire abroad. They tell their fellow citizens that the town still needs modernisation, like better hotels, nightclubs, shops, etc. And soon, Ostend is a boomtown, then a capital. The architect, responsible for the new buildings is finaly allowed to marry the mayor's daughter, while Stix marries the cabaret star and the widowed mayor his new secretary. The only problem is, O.F. hasn't shown up, while finance experts from all over the world are trying to solve the depression problem.

During WWI a German agent receives an order to find out when the Russian army will carry out its expected attack against the German lines.

Das Lied ist Aus (The Song Is Ended) is a typical early-talkie German musical in every respect, save one. The story, concerning the lives and loves of show folk, ends unhappily -- and surprisingly so. The doleful denouement didn't seem to have much effect on the film's box-office appeal, since Das Lied ist Aus proved a major moneymaker.

Jimmy Bolt, a singer and dancer (and occasionally as a waiter) works at a varieté. The man may be talented, but he’s not exactly a big success, and things get complicated when a young orphan girl falls in love with the voice of another singer but then mistakes Bolt for him…