A lawyer uncovers the secrets of a small village while defending her estranged mother in a murder trial.

A story of two completely different lawyers. Go Tae Rim is a lawyer with a 100 percent success rate who knows how to play with the law, and Seo Jae In is a rookie lawyer who believes in the law and justice.

When a crime organization from North Korea crosses borders and enters South Korean soil, a South Korean detective must cooperate with a North Korean detective to investigate their whereabouts.