A drunk father is telling his son a bedtime story about a group of people spending the night at a haunted prison, where they all take "Devil's Acid". They then start having problems differentiating between reality and the trip.

After Carlos, an impoverished teen from a fractured home, receives a desperate note from Sarah, a pen pal he lost touch with a year ago, he uses her letters to solve the mystery of her disappearance and crimes she may have been a ...

Two best friends and roommates are terrified by the vengeful spirits dwelling in their apartment. Based on the novel published by Kobunsha and written by Nanami Kamon.