A night watchman on the Eiffel Tower wakes up to find the entire population of the city frozen in place.
In the tenement slums of Paris between the world wars, impoverished street singer Albert yearns for beautiful Romanian immigrant Pola. Pola's boyfriend, local hoodlum Fred, grows jealous of Albert's constant attention to his woman and frames the hapless musician for one of his own petty crimes. But while Albert is in prison for Fred's misdeed, Pola ends up falling for Albert's faithful best friend, Louis.
On the day of Fadinard's wedding, his horse eats a lady's hat on a bush at the roadside, while the lady is hidden behind the bush with her lover Lieutenant Tavernier. Because she is married, she cannot return home hatless without being compromised, and Tavernier orders Fadinard to replace the hat with one exactly like it - or else he will wreck his new home. In an elaborate sequence of complications, Fadinard tries to find a hat while keeping to his marriage schedule
