In the drama, Hamada plays the titular Onijima Heihachiro, a 44-year-old man who becomes a public prosecutor due to an incident 6 years earlier, where his older sister committed suicide after being caught up in a political scandal. The unyielding Onijima fights to uphold his views of what is right as he takes on Japan's legal system. The female lead, an elite public prosecutor who is the polar opposite of Onijima, will be played by Uchida Yuki.