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.

After being found in 918, the kingdom of Goryeo faced a critical existential crisis when the powerful Yuan dynasty tried to subjugate them. In the fictional setting of this drama, a warrior living in the timeline of Goryeo meets a plastic surgeon living in the present day. The plastic surgeon gets kidnapped by the warrior who got an order from the king to find a doctor who can cure the fatally injured queen. The two individuals who were not meant to coexist are brought together to fight their way through the ordeals on the land of Goryeo. The warrior makes a promise that he will return her to her world, but a scheming royal advisor persuades the king to force the surgeon to stay as she can be useful to him. There, the surgeon falls in love with the warrior who is the leader of the royal guard. In this era of change and chaos, love that transcends time and space blooms.

A wealthy man and a poor stunt girl fall in love. But things get complicated when their souls become inexplicably swapped and dark secrets surface.

The Slingshot is a 2009 South Korean television series starring Park Yong-ha, Park Si-yeon, Kim Kang-woo, Han Yeo-woon, Lee Phillip, and Park Ki-woong. It aired on KBS2 from April 6 to June 9, 2009 on Mondays and Tuesdays at 21:55 for 20 episodes. The Slingshot is about a wronged hero who gets himself thrown in jail, then formulates the ultimate plan for vengeance by enlisting the help of a few prison buddies to form a team, and beating the villain at his own game. It won Best Drama Series at the 2009 Seoul International Drama Awards. This was Park Yong-ha's last acting project before he committed suicide in June 2010.