Set in the constitutional monarchy in an imaginary South Korea, South Korea's Crown Prince Lee Jae Ha is forced to join the World Officers Competition, WOC, by his brother. There, he meets North Korea's strongest female devil instructor Kim Hang Ah.
Kim Hang-ah
Eun Shi-kyung
Lee Jae-ha
Kim Bong-gu
Lee Jae-kang (the King)
Bang Yang-seon (the Queen Mother)
Lee Jae-shin
Eun Kyu-tae
Rhee Kang-seok
Ah Mu-gan
Lee Jae-kang (young)
Yeom Dong-ha
Lee Jae-ha (young)