Pauline's widowed mother and Evelyn's widower father have just married, and the rest of the family is delighted. But ever since the clean-up after the wedding reception, Pauline and Evelyn are both sure that they will never, never be friends, especially after Evelyn ruins Pauline's best dress, and Pauline is suspected of causing Evelyn to get a note sent home on the first day of school. The fact that they have to share a bedroom just makes it worse. Madame and Monsieur Buerrette start off on their honeymoon; not on the moon eating honey, as Jean suggests, but to Italy. For the first time after the wedding, Pauline and Evelyn have to team up-to rid the family of the hair-style crazed babysitter, Isabelle Smith. After that, life continues on as usual, with Madame Lorée as babysitter, until their parents rush home with the news that Germany has declared war on France. Pauline's favorite brother Pierre and Evelyn's beloved father go off to war...and meanwhile the Buerrette family can only pray and hope for the best...