After a difficult struggle with fertility, Tori Breyer's dreams of motherhood come true with the arrival of a mysterious baby boy. Brandon appears to be everything Tori and her husband, Kyle, ever wanted - bright, talented and curious about the world. But as Brandon nears puberty, powerful darkness manifests within him, and Tori becomes consumed by terrible doubts about her son. Once Brandon begins to act on his twisted urges, those closest to him find themselves in grave danger.