Everyone sees Tanya de Batz as a sick girl who doesn’t know when the next attack of weakness will knock her off her feet. The mother desperately wants to marry Tanya off to ensure her safety. But Tanya dreams of a completely different life. After all, her father, a former musketeer, told his daughter about his adventures from an early age and taught her to fencing, without making concessions.

When her father is brutally killed, Tanya thinks that her dreams will no longer come true. But it turns out that shortly before her death, he enrolled her in a certain Academy of Noble Maidens under the leadership of Madame de Treville. Only upon arriving in Paris does Tanya discover that this is in fact a secret training base for girl musketeers. They are taught to fight, seduce men, find out dangerous secrets - all for the sake of France and the king.

At the Academy, Tanya finally finds true friends and a noble goal. The unrest has recently subsided in the country, and the conspirators, dissatisfied with the power of Louis XIV, are again weaving intrigues. The young musketeers have to find out what they are up to. But Tanya is haunted by the mystery of her father’s death. Will she be able to give up thoughts of revenge for the sake of duty? Or will she not have to choose?