The Emperor: Owner of the Mask is a South Korean television series starring Yoo Seung-ho, Kim So-hyun, Kim Myung-soo, Yoon So-hee, Heo Joon-ho, and Park Chul-min. It aired on MBC every Wednesday and Thursday at 22:00 (KST) from May 10 to July 13, 2017 for 40 episodes.

Plot

During the Joseon Dynasty, the long-awaited son of King Yi Yoon is born, but in exchange for its life, the king will hand over the power of the Bureau of Water Supply to the secret society "Pyunsoo Group" that controls the government. The king covers the Crown Prince's face with a mask and raises him secretly in order to protect him from the Pyunsoo Group.