Thanks to Meme Oshino, Koyomi Araragi, a high school student, is able to remain a human after coming across a female vampire. However, since the incident, Koyomi seems to meet girls who have an apparition-related issue. Hitagi Senjyogahara doesn’t weigh anything, Suruga Kanbaru’s right arm becomes like a monkey’s, and a young girl, Mayoi, can't find her way home no matter how much she tries.