One night, mild-mannered college student Mori Hiroshi bumps into a woman visiting his next-door neighbour, Yamamoto. Abnormally tall and dirty-looking, the woman has long, straggly hair, wears a man's coat and carries shopping bags in both hands. But then, without warning, she abandons her dogged pursuit of Yamamoto and shifts her attentions to Hiroshi himself. Who is this woman, what is she after, and will Hiroshi ever be able to shake her off?