Guardians of the Throne; Part I

Isabel is a young princess when her parents adopt the son of her father's best friend. Soon after, she learns that her kingdom is a great danger, and her entire world will change forever. Her fate is soon put into the hands of Sir Owen, who is the King's most trusted knight.
While Isabel, is struggles to find her place, William, must also learn to adjust to his new life as part of the royal family. Soon after he goes to live with the royal family, he discovers that he has mysterious strengths, and finds himself saving the life of the Princess.
Will Owen and William, be able to keep the Princess safe?