A country at war. A city in crisis. Series 1: On the streets of 17th century Paris, law and order is more a fledgling idea than reality, and the Musketeers, Athos, Aramis and Porthos, are far more than merely royal bodyguards for King Louis XIII; they are inseparable, loyal unto death and committed to upholding justice. Series 2: As France teeters on the brink of war with Spain, the death of Cardinal Richelieu has left a void that could yet be filled by an even darker threat. Meanwhile, the Comte de Rochefort has escaped from a Spanish prison and aims to establish himself at court. Series 3: Heroes on the battlefield, the Musketeers return from the Spanish front to a Paris seething with resentment, a city on the brink of starvation. The corrupt Governor Feron has been running the capital for his own ends, but behind Feron hides an even greater menace in the form of Lucien Grimaud, a vicious gangster with a powerful hold over the governor.