In impoverished East London in the '50s and '60s, a group of midwives — some of whom are also nuns — find joy and heartbreak in and outside their work.

The hot-headed young D'Artagnan along with three former legendary but now down-on-their-luck Musketeers must unite and defeat a beautiful double agent and her villainous employer from seizing the French throne and engulfing Europe in war.