An American priest working in Mexico is possessed during an exorcism and ends up committing a terrible act. Eighteen years later, the consequences of his sin come back to haunt him, unleashing the greatest battle within. “我”即上帝,超越魔鬼的交易。 The story of "The Exorcism of God" follows father "Peter Williams", an American exorcist who, being possessed by a demon he was trying to expel, ends up committing the most terrible sacrilege. Eighteen years later, the consequences of his sin will come back to haunt him, unleashing the greatest battle against the evil within.