New World

An undercover cop Lee Ja Sung infiltrates South Korea’s largest crime organization and spends ten years rising in the ranks. When the head of the organization, Goldmoon, is killed, a conflict of power rise between the successors over the head position. The police interfere too with its plan. Jung Chung, Ja Sung's boss considers him a brother and trusts him a lot. Ja Sung will be torn between his duty as a police officer and fidelity to Jung Chung.
(Source: tvN Asia)