Prometheus, the Titan God of Fire, the thief who stole fire from the Olympian Gods and gave it to humanity, is obligated to a promise-a contract made between him and the biblical God. In this world, supernatural beings such as Gods, Angels, Fallen Angels, and Devils are real, but they are hidden from Humanity. Special artifacts known as Sacred Gears are gifted onto Humanity as a way to protect them from the supernatural perils. This story will follow the life of Prometheus. After the death of God during the Great War, isolating himself in the dimensional gap in order to accomplish his mission--his obligation to the biblical God. However, he was found by his two disciples, Athena and Hephaestus, who persuades him into returning to Earth to live a new life.