The King’s Face is a story about Gwang Hae, the child of a concubine who becomes the crown prince of Joseon during politically unstable time. For the next 16 years, the illegitimate prince lives through turbulent times, enduring death threats and possible dethronement. As a son of a concubine, claiming the title of a crown prince was not an easy task. However, as time passes, he finds himself facing a series of neverending challenges, always having to overcome one after another. Gwang Hae has a contentious relationship with his father King Seonjo, and the two eventually become rivals in politics and love. There are opponents plotting against him from within and outside the palace. By studying physiognomy and using it to his advantage, he fights a lonely battle to protect his throne. The drama stars Seo In Guk, Jo Yoon Hee, Lee Sung Jae, and Shin Seong Rok.