《猖獗》讲述了古代王子带兵与名为“夜鬼”的僵尸战斗，拯救国家的故事，玄彬饰演了在国外当十多年人质后回国的王子，而张东健则饰演了手握兵权，试图进行改革的朝廷重臣。Lee Chung is a Prince of Joseon, but he has been taken hostage to the Qing Dynasty. He enjoys boozing, womanizing and gambling. He is also an excellent swordsman. His older brother Lee Young will succeed to the throne and brings Lee Chung to Joseon. He returns after more than 10 years. Soon, Lee Chung faces monsters that run rampant in the night.