In an orphanage in London, a child named Oliver suddenly disappeared. Before this, a noble couple appeared in the orphanage and adopted a beautiful boy, Mason. However, just after Mason moved into the manor, a series of strange events happened here: a bloody key, a cemetery in the back hill, a suspicious adoptive father... The fog gradually thickened, and the black cat's cry cut through the silent night, becoming the only clue to unravel the mystery.
Purpose: An exploration of bioethics.