A young woman drops her smartphone... It all starts there. Four female high school students are close friends at a cram school. They share everything about their private lives, including personal information! When a man finds the phone, he becomes the worst pervert imaginable! He breaks into one of the girl's homes and kidnaps them, keeping them captive in ruins until they can resist no longer. He continues to have his way with each helpless girl, using various methods like anal penetration, strangulation, spanking, and more. One after another, these innocent girls fall victim to this relentless sexual assault.