Another Public Enemy (2005)

Top lawyer Kang (Sol Kyung-Gu) takes on the case of old school friend Han Sang-woo (Jeong Jun-Ho), a successful businessman who has been accused of corruption, embezzlement, and even murder. Kang is determined to bring Han to justice, but somehow he always manages to stay one step ahead. As the legal battle becomes more intense, Kang finds himself drawn into a murky, dangerous underworld when the pursuit of justice becomes personal.