The 1990''s. Tragedy strikes the Beharrell family in the form of a debilitating stroke. Now the youngest child in the family is convinced his paralyzed father didn''t truly fall ill but is possessed by something sinister. He believes a demon, THE REPLACER, has come to take away his jolly, agreeable, tech-obsessed Dad. But no one seems to see the monster — and with every passing day, his father falls deeper into the clutches of evil.