Osborne, a humiliated live‑in son‑in‑law, endures three‑year abuse from the Caldwell family. Framed and brutally beaten by his wife and mother‑in‑law, he is driven out with nothing. In his darkest hour, he learns he is the Godfather's biological grandson, gifted with the bloodline power "Eye of Satan". Osborne embarks on ten deadly succession trials. For the first trial, he returns to the Caldwells. Using his awakened power and wits, he forces them to pay him 20 million and passes the test. He receives an inheritance bracelet and a huge fortune. Yet he finds his critically‑ill foster sister only has days to live. Suddenly the second trial begins. He must approach and stay by Clarissa, the elite heiress, within three days...