During Koyomi Araragi's second year at Naoetsu Private High School, he meets Tsubasa Hanekawa, the highest honor student in his class, by happenstance. When they start talking, Hanekawa brings up a surprising rumor: a vampire with lovely blonde hair and piercing cold eyes has been observed roaming about town. Araragi, relieved to have acquired a new buddy, dismisses the rumor and enjoys the remainder of his evening. On his way home, though, he comes upon blood splatters heading down the steps to the subway. Curiosity drives him to investigate deeper, so he follows the grisly pools into the station's depths. He is scared as he gets to the source of the blood.