Ishimori Uka is very shy and has a hard time making friends. When she was a middle school student, students made fun of her by calling her "stone". Around that time, she met Miura Kai with lemon color hair. Because of him, she entered the same high school. Uka now wants to overcome her shyness and have friends. Kai is a popular student at the school, but he doesn't talk much or seem interested in others. He doesn't know why, but he becomes concerned with Uka. Uka has admired Kai, and she now has feelings for him. Kai has a secret, which no one knows.

A dating reality show set in a haunted apartment transforms into an unimaginable, relentless battle royale of carnage! A mysterious disappearance of a YouTuber and aspiring idols occurs during the production of a show with the premise: "Live in a haunted apartment and can't leave until you've captured a ghost on camera!" But that incident was only the beginning. A group of men, women, and their staff are assembled for the filming of a new dating reality show set in a haunted apartment, but what awaits them at the new haunted apartment is a hellish trap set by an evil group intending to sacrifice them in a certain "ritual"…