Sonoko (Araki Yuko) becomes a suspect in a serial murder case!? While Takagi Masaru (Mamiya Shotaro) and Saruhashi Sonoko pursue the truth of the case and work hard to prevent a fourth victim, the situation takes a sudden turn! An article that paints Sonoko as the culprit is published in a weekly magazine, and Sonoko is suddenly pursued by the public! Former class representative Kobayashi Saki (Fujima Sawako) pleads, "Let's publish a rebuttal article and tell the truth," but Sonoko hesitates, not wanting to put Takagi and the others in danger... Meanwhile, the fourth murder finally occurs!