The cherished youngest daughter of the Estern Duchy, Beatrice, was thoroughly satisfied with the husband she had chosen for herself.

“I never realized that having a wife would be such a bothersome thing…”

That is, until she happened to overhear her husband casually utter those words to his lieutenant.

“It feels like Caesar doesn’t love me anymore. What should I do, Sister?”

In an effort to uncover her beloved husband’s true feelings, Beatrice seeks advice from each of her four older sisters in turn.

“Are you suggesting we sleep in separate rooms? …Very well. Do as you wish.”

But for some reason, every time she follows their advice, the situation only seems to get worse.

Amid misguided counsel and growing misunderstandings, will Beatrice be able to win back her husband’s love?