A fierce elite guard. A loyal lady in waiting. They must work together to save three princesses from certain death. On the verge of dying after giving birth to twins, the queen of Mercia pleads with Lady Felicia to save her infant daughters. With the castle overrun by King Ethelwulf's invading army, Lady Felicia vows to do whatever she can to take the newborn princesses and their three-year old sister to safety, even though it means sacrificing everything she holds dear, possibly her own life. Gravely wounded in battle and knowing all is lost to his enemy, the king of Mercia tasks Lance, one of his fiercest elite guards, to protect his family along with keys to an ancient treasure. As Lance makes plans to sneak the princesses out of the capital city, he doesn't need or want Lady Felicia's help. With the dark enemy in pursuit, Lance and Felicia must put aside their differences to outrun King Ethelwulf and prevent him from killing the princesses. In a desperate attempt to hide the young girls, Lance and Felicia agree to a marriage of convenience, a decision that will change their lives-and hearts-forever.