After being raped on a deserted road, Caroline MacCLeary gives birth to a healthy baby boy, and she and her husband Eli start to move on with their lives. Seventeen years later their son Michael falls mysteriously ill. As he grows rapidly, the beast within him struggles to come out. Michael's body keeps changing, and his demonic possession grows stronger daily - as his chances of survival dwindle rapidly away. A teenager is experiencing growing pains of a most shocking sort in this exciting, tense and all-too-real story of human-into-monster transformation.