After solving the riddle, Oedipus brings an end to the torment the Sphinx has brought upon the citizens of Thebes. He is heralded in as the new king. But now, Thebes is tormented by a greater plague that is devastating the city. To lift the plague, Oedipus must find the one who has murdered the former king. He sets out on his journey to solve the murder and soon realizes that the guilt may lay right at his own feet.