With the help of Meme Oshino, a peculiar man living in an abandoned building, Koyomi Araragi, a third-year high school student, survives a vampire assault. Even though he was freed from vampirism and is now a human again, he still has superhuman healing skills and heightened vision. Regardless, Araragi, with the support of his friend and class president, Tsubasa Hanekawa, strives to live a typical student's life. When Hitagi Senjougahara, a classmate, falls down the steps and is caught by Araragi, the boy notices that the girl is unusually light. Despite Senjougahara's protests, Araragi insists on assisting her, opting to recruit the help of Oshino, a guy who had previously aided him in his own difficulty.