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A modern doctor navigates a treacherous royal world, risking her life to save a queen while uncovering secrets that could alter destiny.
When the queen-to-be of medieval Korea is badly wounded, Captain Choi Young uses a wormhole to "heaven," which is actually 21st-century South Korea, to bring back the spoiled Dr. Yoo Eun-Soo who becomes a pawn in a game of human chess.