Two years after the events of Tokyo Ghoul, Haise Sasaki works for the CCG and leads the Quinx Squad, a unit made up of investigators capable of using abilities similar to those of ghouls. Suffering from severe memory loss, he remains unaware of much of his own past and the true nature of his identity. As he confronts various ghoul organizations and takes part in CCG operations, buried memories gradually begin to resurface. Haise soon finds himself at the heart of a conflict where humans and ghouls clash more violently than ever, while the secrets surrounding his personal history and the ambitions of the CCG threaten to reshape the balance of Tokyo.