A young boy named Taichi Ogawara finds a fox cub on the side of the road and takes it home as a pet. He discovers it is blind, deaf, and mute. Because of this, he names it Helen, after Helen Keller.

Ayami, who works in the marketing department of an advertising agency, is about to turn 30 and is beginning to think that she would rather live her life for work than marriage. Just then, she meets Kurasawa, who works at the same company, and they soon find themselves drawn to each other.