Plot: This drama portrays the life of the 19th king of Goguryeo Hwanwoong who was sent from the heavens to make the world a better place He falls in love with Saeoh and gives her the joojak necklace however Kajin becomes jealous since Saeoh has given birth to Hwanwoongs son She takes the baby and throws him off a cliff Saeoh thinking that her son had died is overcome with grief and turns into the black joojak to destroy the world