Cho Yeo Hwa has been a widow for 15 years. Her in-laws are the most prestigious noble family in the kingdom. During the day, she leads the life of a widow devoted entirely to her dead husband's memory and rarely ventures outside the gate of her home. At night, Yeo Hwa dons the mask of Hero, who secretly jumps over the surrounding wall to save the helpless.

• Lee Ha-nee
• Lee Jong-won
• Kim Sang-joong
• Lee Ki-woo
• Park Se-hyun
• Kim Mi-kyeong
• Seo Yi-sook
• Jo Jae-yun