Mo Chen was born in the remote mountain village of Heishan'ao. He lost his father as a child, and his mother remarried twice, taking him with her. He endured disdain at every turn. He is resilient as grass and ruthless as a wolf: he repays kindness tenfold and vengeance a hundredfold. Long-term malnutrition has left him thin, but his pitch-black eyes shine with a startling intensity. In a life-or-death crisis, he accidentally discovers that his "mixed spiritual root" can devour other people's spiritual roots and use them to nourish his own. It is his greatest secret, and his deepest original sin.