Princess Se Ryung is the headstrong and forward-thinking daughter of Grand Prince Su Yang, who is determined to be King. She falls in love with the son of his mortal enemy, and their romance gets caught in the crossfire of her father's quest for the throne.

• Park Si-hoo
• Moon Chae-won
• Hong Soo-hyun
• Song Jong-ho
• Lee Min-woo
• Lee Soon-jae
• Kim Yeong-cheol
• Uhm Hyo-seop