In a modern-day Tokyo, a hidden species known as "Ghouls" lives among humans. Identical in appearance but possessing predatory biological weapons (Kagune), they can only survive by consuming human flesh. The story follows Ken Kaneki, a shy college student who barely survives a date with a Ghoul named Rize. After an emergency organ transplant using Rize's parts, Kaneki becomes a "Half-Ghoul." Caught between two warring worlds—the human Commission of Counter Ghoul (CCG) and the desperate Ghoul underground—Kaneki must navigate the moral gray areas of a society where "monsters" are often made, not born, all while struggling to suppress his own newfound hunger.