Tomioka Yuuji is a 32-year-old night-shift guard for a mall. He works completely alone, so he often slacks off, exercising and hanging out on the roof. In some ways, the job is perfect for him, as he's always been terrible with people. However, he can't help feeling incredibly lonely and wishing he had friends.

One night, he makes a wish for friendship on a falling star, and strange events start to happen.