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 Hwanwoong's 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. Hwanwoong is the only one who could stop her. Afterwards, Hwanwoong returns to the Heavens and prophecizes that 2000 years later, the true Joo Shin king will come to Earth. With the help of the four gods, he will rebuild Joo Shin.

Bride of the Century is a TV show that follows the story of a cursed family who must find the true love of the eldest son to break the curse. To do so, they arrange a marriage between him and a woman who looks exactly like his first love, but they soon discover that she is not who she seems. As the story unfolds, secrets are revealed, hearts are broken, and true love is put to the test.