When Spanish General Tariq Alaman offers to hand over the formula of a unique and deadly gunpowder in exchange for help rescuing his kidnapped daughter, the Musketeers find themselves tangled in a complex web of political trades with the Spanish. Their mission is further complicated when Porthos is captured by Spanish agents. When the Dauphin becomes seriously ill, Constance takes matters into her own hands and risks everything to save his life.
Set on the streets of 17th-century Paris where law and order is more an idea than reality, the series follows Musketeers Athos, Aramis and Porthos who are far more than King Louis XIII's personal bodyguards, but ultimately stand resolutely for social justice: for honour, for valour, for love and for the thrill of it.
The Musketeers - The Good Traitor Synopsis and Schedule