Sung Sai Kit (Jordan Chan) and Ji Xueli (Li Baotian) are the renowned Southern and Northern "King of Lawyers" respectively, and they have contrasting styles and philosophies. Naturally, they don't see eye to eye with each other, always trying to outsmart each other while defending justice in court. Intelligent as they are, Sung and Ji's rivalry has blinded them to the truth behind an unsolved case that involves both of their families. Meanwhile, the real villain is plotting to remove these thorns in his side...