Gräfin Plättmamsell.

The fun-loving laundress Mieze spends a romantic evening with the womanizer and fashion designer Max, who, however, wants nothing to do with her the next day. This only changes when Mieze appears to be the daughter of a count and "Countess Radebeul" moves into the elegant Hotel Bristol. After all sorts of complications and embarrassments, the countess turns out to be a misunderstanding, and Mieze and Max find each other after all.