In the new Shiniki district of Tokyo, Zen Seizaki is a diligent prosecutor at the Tokyo District Public Prosecutors Office. He is tasked with investigating Japan Supiri, a pharmaceutical company accused of false advertising. During his inquiry, he makes a shocking discovery: the company has concocted clinical research for its latest drug. To crack the case, Zen works hand in hand with his assistant, Atsuhiko Fumio. As they delve deeper into the investigation, they stumble upon a tainted document that leads them to Shin Inaba, an anesthesiologist. Within the file, Zen discovers a page covered in blood, skin, and hair, with the letter "F" repeatedly scribbled on it. The investigation takes a turn towards the grim, as Zen struggles to maintain his ethical code while unearthing a web of lies and the truth behind the mayoral election. Zen's quest unravels a dark plot concealed behind the election, implicating people closer to him than he ever imagined. The case spirals out of control, exposing the underlying corruption and deceit of the district's founding and a mysterious woman. Zen's tenacity and commitment to the truth will be put to the test as he navigates a hurricane of lies and deception.