Hotaru, a molester investigator, boards a train called Molester Heaven. It's a risky job to expose molesters by using her own body as a decoy. It was only a matter of time before Hotaru, who boasts the number one record for molester arrests, was targeted. Hotaru is caught off guard during the investigation and falls into the hands of a group of molesters. She is forced to suck the men's dicks one after another, her beautiful face is soiled with milky semen, and a dick is forced into her pussy. What awaited her was a series of continuous rapes.