A French language coming of age film about three mulatto brothers

Just as she is about to marry Jules, Nénette realizes that an adventuress has borrowed her identity in order to marry Hubert de Mont-Vermeil. But at the same time, a cardinal arrives, and the truth must be kept from him. Nénette passes for Hubert's wife, and the cardinal spends his time reconciling the pseudo-spouses. After many misunderstandings, Hubert and Nénette discover that they love each other, while Jules marries the pretty soubrette, not without first inoculating Hubert's virtuous aunt with his taste for racing.