During Koyomi Araragi's second year at Naoetsu Private High School, he has a chance encounter with Tsubasa Hanekawa, the top honor student in his class. When they strike up a conversation, Hanekawa mentions a shocking rumor: a vampire with beautiful blonde hair and freezing cold eyes has been seen lurking around town. Happy to have made a new friend, Araragi writes off the rumor and goes about the rest of his evening...