You come across two homeless children one day, shivering and scared. Taking pity on them, you decide to take them under your wing and offer them a place to stay. As you get to know the two children better, you begin to detect some strange things about them - they seem to have superpowers, and their eyes sometimes glow red. Eventually, you discover the truth: the children are actually demons, but they're orphaned and hiding from a group of demon hunters.