Narcotics investigator Rui (Miki Tachibana) discovers a disturbing video among confiscated evidence during her investigation. The footage shows a young girl (Shiina) driven to madness by the new designer drug "Angel Tear." Determined to save her, Rui infiltrates the gang's hideout, only to face a web of deep betrayal and the horrifying revelation of pregnancy. The story unfolds as a gripping human drama, capturing the fate of a girl caught in the midst of the investigation and the intense emotional trials faced by the detective.