Miku Takeshita and her family have moved from Japan to live in the U.K., but unfortunately the family's enemy demons have followed them . . . Miku knows she's in trouble when her new supply teacher turns out to be anukekubi— a bloodthirsty demon who transforms into a flying head and snacks on children. That night, in a raging snowstorm, Miku's little brother Kazu is kidnapped by the demons. It's up to Miku and her friend Cait to get him back. The girls break into their snow-locked school, confronting the dragon-like Woman of the Wet, and outwitting the faceless Nopera-bo. At last, they come face to face with thenukekubiitself — but will they be in time to save Kazu?