Two Angels from Heaven and two Demons from Hell were sent to Earth after being exiled and sent down by their own enjoyment. They were to survive everyday life as 'almost normal human beings', the Ruler in Heaven and Hell said. They were never suppose to have their paths woven together; but Fate had other ideas. With their destinies now intertwined, rather against their wills, they must learn to thrive in this strange new environment, so different from the homes they which long. Heaven and Hell were enemies, and their own from each side never crossed into each others' borders. But what will happen when Dara and Bom, the Angels from Heaven, and Chaerin and MInji, the Demons from Hell meet unexpectedly at a crossroad? Could things possibly take a turn and end in an unstable yet unbreakable friendship... and may even fall in love with the opposing side's Angel and Demon? Or are the entities meant to be forever at odds, never to be able to be with one another, as the Ancient Laws forbid it?