Mary Stuart is a young woman the world would eventually come to know as Mary, Queen of Scots.

Before her tumultuous rise to power, she is already passionate and poised as she arrives in France to secure Scotland's strategic alliance by formalizing her arranged engagement to the French king’s son, Prince Francis. But with politics, religion, and secret agendas involved, the arrangement faces many complications.

Mary is met with more troubles such as foes conspiring to sabotage her marriage and threaten her life. She also becomes aware of other dark forces - a mysterious presence in the castle who may become her unlikely ally. With danger at every turn, Mary, along with her ladies-in-waiting, must prepare to rule the new land and balance the demands of her country and her heart.