After starting their own detective agency, Nick and Audrey Spitz land a career-making case when their billionaire pal is kidnapped from his wedding.
Rita, an underrated lawyer working for a large law firm more interested in getting criminals out of jail than bringing them to justice, is hired by the leader of a criminal organization.
D'Artagnan, on a quest to rescue the abducted Constance, runs into the mysterious Milady de Winter again. The tension between the Catholics and the Protestants finally escalates, as the king declares war — forcing the now four musketeers into battle. But as the war goes on, they are tested physically, mentally and emotionally.
