One Ordinary Day

On a day no different from any other, a straight-A university student Kim Hyun-soo (Kim Soo-hyun) makes the mistake of his life. Just as any other college kid would, Hyun-soo is on his way to hang out with his friends. Late at night, he takes his father's taxi to head over to where his friends are. Hong Gook-hwa (Hwang Se-on), a sad-looking mysterious girl mistakes Hyun-soo's taxi for an on-duty cab and hops in. That was the beginning of everything. All the choices Hyun-soo made that night leads the normal university student to becoming the prime suspect in a violent murder case. While Hyun-soo shivers from fear and the fact that he is falsely accused, everyone still points to him as the only possible murderer. In this hopeless situation, those who stretch out a helping hand are a low-life attorney, Shin Joong-han (Cha Seung-won), and a criminal kingpin who rules the prison food chain, Do Ji-tae (Kim Sung-kyu). To prove his innocence in any way possible, Hyun-soo gives everything he has to fight against the police and the Korean prosecution.

On January 5, 2021, it was announced that The Studio M, Chorokbaem Media and Gold Medalist would co-produce a television series based on the British Broadcasting Corporation (BBC) crime series Criminal Justice.^[18] BBC Studios confirmed the adaptation on January 13, through its media centre.^[19] Kim Soo-hyun and Cha Seung-won stars in leading roles, Kwon Soon-kyu wrote the screenplay, and Lee Myung-woo directed the series.^[20] Filming began in the first half of 2021.^[18] It is Coupang Play's first original series with exclusive broadcast rights in South Korea.^[1]

In the Philippines, the series was acquired and was bought by GMA Network. It is slated to air on 25 August 2025 in the country.^[21]