Secret Royal Inspector Joy

Yi Eon protects his people with the sword as the Crown Prince has taught him. As Jo Yi tries to convince Tae Seo and Mal Jong with her sharp observation, Yi Eon is impressed and wants to keep her with him. Meanwhile, Park Seung sends his son, Do Soo, to Tae Seo when he hears about Tae Seo getting involved with a new secret royal inspector.