Set during the Joseon era, Kingdom takes you on an epic and often gruesome trail as it follows crown prince Lee Chang (Joo Ji-hoon) and his quest to find out the truth behind his father’s illness. He travels to the ends of the Kingdom in search of the King’s physician and comes face-to-face with a contagion that is sweeping across the land. With malevolent forces conspiring against him to dethrone him for treason, he ardently follows his path to protect his people with the help of physician Seo-Bi (Bae Doo-na), Yeong-Shin (Kim Sung-kyu) and Moo-young (Kim Sang-ho).