The organization of Vendetta House-a mansion located in the middle of nowhere-has the sole purpose to take in kids like Ariel: demon-bloods, also more commonly known as Cambions. They say Cambions can't live in human society, and they aren't wrong. Telekinesis, earth manipulation, and animal control are only a few of the powers that Cambions are gifted with. But that's not what Ariel is worried about. An abandoned section of Vendetta House traps hundreds of dead spirits, ghostly remnants only Ariel and another strange boy can see. Since her arrival, the dead numbers have been rising, and coincidentally, kids within the House are going missing. With the help of her new friends, Ariel must uncover the secrets of Vendetta House and fight towards escape. Or else they might be dealt with, and disappear too.