Society contains humans and Ghouls, who look and behave like humans most of the time. One problem: the Ghouls must eat humans to survive. Ken Kaneki, a human in this society, is thrilled to go on a date with the woman he likes, but it turns out she only wants to eat him. After an accident and a dubious rescue, he transforms into human-Ghoul hybrid. Now Ken has to survive Ghoul wars, learn the ways of Ghoul society, and come to terms with his existence as a half-Ghoul. The first volume of Tokyo Ghoul, by Sui Ishida, explores a transformation into that of a monster and the way one man copes with this horrific change.