At the end of an alley, a “lighting shop” is always lit up, and the mysterious boss carefully wipes every light bulb, while customers of all kinds come and go. A nurse and her boyfriend move into a new apartment near the shop. She gradually discovers that everyone here has a secret that they can’t tell. On a stormy night, she walks into the lighting shop at the end of the alley, and the answers are slowly revealed…

Drawn by a lucrative insurance payout, a woman and several others move into a haunted building for seven days, where supernatural disturbances and hidden motives spiral into a deadly struggle to survive the night when the spirits return.