Hideaki is a salaryman who lives alone in a company housing unit. One night, when he returns from the office, he hears the wind blowing through the open balcony door. Memories of a tragic event one month ago then take over Hideaki's mind.

Shimada, a salaryman, stops by a convenience store on his way home from work. It suddenly starts to rain, and he doesn't have an umbrella, so he "borrows" one that he finds on the umbrella rack. But as he walks along with the umbrella open, he senses a darkness approaching from behind.