In this reimagining of Alexandre Dumas's classic novel, the musketeer Aramis is secretly a woman in disguise, drawn to the elite corps after exacting revenge on her lover's murderer. Years later, plucky musketeer-in-waiting D'Artagnan is to be hanged for a crime he didn't commit. To exonerate her friend, Aramis must uncover the truth by navigating a twisting web of court conspiracies and her own past — without revealing her secret.