A hundred years ago, during the Rebellion of Divine Punishment, the angel clan was almost destroyed. Since then, it has been hidden in the eyes of the world. The vampire clan and the demons formed an alliance and launched an attack on the human world. The world was in chaos. Among humans, a group of people who were blessed by angels appeared. They have abilities different from ordinary people and are called superpowers. , As the conspiracy was exposed bit by bit, the Key to Heaven owned by the former heir to the Angel Royal Family became something that all parties competed for. As long as you get this key, you can go to the lost city in the sky, gain supreme power, and become the real king. But the real darkness is slowly coming...