A scientist with the ability to enter the subconscious minds of the possessed must save a young boy from the grips of a demon with powers never seen before, while facing the horrors of his past.

In New York, the boy Cameron lives with his Dutch mother Lindsey that is divorced from his alcoholic father Dan. One night, Cameron overhears a noise in the kitchen and is attacked by a homeless woman: however he kills the woman, breaking her neck. The Vatican representative Camilla summons the scientist Dr. Ember to help the boy that is possessed and the exorcism is not effective. Dr. Ember has the ability to enter in the mind of people possessed by demons and bring them back to reality in a dangerous procedure with the support of his team composed by Oliver and Riley. When Dr. Ember visits Cameron, he realizes that the boy is possessed by the insidious demon Maggie, who killed his wife and son in a car accident. Will Dr. Ember succeed in destroying Maggie and saving Cameron?—Claudio Carvalho, Rio de Janeiro, Brazil

An 11-year-old boy named Cameron Sparrow is attacked by a hooded stranger who tries to kill him. However, Cameron kills him instead and looks at the camera with red eyes, revealing that he is actually possessed by a demon named "Maggie." Meanwhile, Dr. Seth Ember approaches a man named Henry in a club and makes him realize he is dreaming. Ember reveals that the woman Henry has been with is a demon who has possessed his body. The two escape and return to reality, and Henry is freed from the demon. In the waking world, Ember actually uses a wheelchair. Ember's assistant Oliver warns that the demons have started to adapt to Ember's efforts and that soon he may not be able to escape back to reality..