1402. Queen Margrete has gathered the Nordic kingdoms in a union, ruled through her adopted son, Erik. But a conspiracy is in the making and Margrete finds herself in an impossible dilemma that could shatter her life's work: The Kalmar Union.
Years have passed since the Three Musketeers, Aramis, Athos and Porthos, have fought together with their friend, D'Artagnan. But with the tyrannical King Louis using his power to wreak havoc in the kingdom while his twin brother, Philippe, remains imprisoned, the Musketeers reunite to abduct Louis and replace him with Philippe.