D'Artagnan reunites his former companions to save the queen of France from the scheming Cardinal Mazarin, and embark on a mission to England to prevent the beheading of Charles I. Meanwhile, the daughter of a former vanquished enemy is seeking revenge on the four heroes. Swashbuckling adventure sequel, with Oliver Reed, Michael York, Frank Finlay, Richard Chamberlain, Kim Cattrall and Roy Kinnear, who died during filming