The story is set in the early years of the Goryeo regime. Hae Soo, a 25-year-old woman from the modern era, is transported back in time to the Goryeo dynasty and becomes caught up in the conflicts and power struggles amongst the Wang princes. There, she falls in love with Wang So, a man who strikes fear into the hearts of the people. Wang So is the emperor’s heir; he does not wish to be the centre of attention, yet he is a natural-born ruler. His personality is as cold as ice.