Stuntman Cha Dal-geon gets involved in a tragic airplane crash and ends up discovering a national corruption scandal in the process. Go Hae-ri, the oldest daughter of a deceased marine, decides to work for the National Intelligence Service as a secret ops agent in order to support her mom and younger siblings, although all she wanted to do is to become a civil servant.

The story of the woman that would become Empress Ki, and her struggles as she worked her way through war, political conspiracies, and the imperial palace to become Empress of China. This Korean Drama re-imagines the historical figure as a fierce, independent woman who goes to extreme lengths to protect those she loves.