Jongin resides in a small town called Adam, which is known for its delicious red apples in the Kingdom of Eden. The town has a relatively peaceful lifestyle—that is, until the townspeople have to give up a young male adult as a sacrifice to the demon who lives in their sister town, Eve. The sacrifices have to be given every one-hundred years to the demon in order for the town to escape certain death.

When Jongin’s older brother, Junmyeon, is sold to the mayor by their father as the town’s new sacrifice for the Demon of Eve, Jongin follows after his older brother and is determined to set him free from the demon’s clutches.

But what if the Demon of Eve is not really a demon, but a fallen angel who just wants to be loved?

Will Jongin slay the demon, or save it from its damnation?