After a dark secret shakes Kirk Hudson's faith, he escapes from the religious cult he's been a member of for over two years. He can hardly wait to see his mother and his identical twin again, but the night he arrives home, his brother is brutally murdered. Wracked with guilt because he suspects a cult member meant to kill him instead of his brother, Kirk is forced at knifepoint to return to the cult where he finds even more secrets. No one is sure what "Transfiguration Day" really means except the ethereal sister and devilish brother co-leaders. The deeper Kirk delves into each secret and the murder of his twin, the more dread he feels. But Transfiguration Day scares him most of all.