Her father's embezzlement of political funds was discovered, and the Count's daughter Agnès, known as the "beautiful rose", fell into ruin. While many people left her because of her downfall, it was the poor knight Bernard who reached out to Agnès. To avoid her mother's inevitable marriage proposal, Bernard asks Agnès to play her fiancée, and the two meet her mother, Océanne. As a result, Oceanne unexpectedly takes a liking to Agnès, and for a while, talks of marriage, which was supposed to be her last resort, really progress...