This story takes place in a world without ghouls. It's just like our world. However, one day a boy named Riley experiences some changes. First he has trouble sleeping and eating. One day he wakes up to find his sclera black and pupil red. Soon afterwards he gains a taste for human flesh. How will he adapt to this flesh eating life. How will the world react to the first ghoul.

When a homeless boy comes across a mysterious serum while running from the authorities in Marley, what will happen?