After losing his parents in a war, John was sold into slavery. Bearing strange scars on his back, he caught the attention of Lady Isabel, and was bought by her. But even though she treats him like a friend, a plot emerges for John to be killed...

One day, his prayers to become stronger are unexpectedly answered: a wounded battle angel named Michael crashes into the castle and possesses John’s body! Now John is thrown into the terrifying war between angels, demons, and their knights, and he must learn how to control his new powers. Along the way, he discovers the truth of his scars, and why so many seek to kill him...