Kang Dan-sim didn't climb to Royal Noble Consort- the highest rank in the Joseon inner court by playing it safe. Cunning, ambitious, and notorious enough to be called a national seductress, she still couldn't outmanoeuvre the rivals who eventually handed her a cup of poison. She had a contingency for that too. A forbidden ritual, a jade hairpin, and a soul stubborn enough to refuse a permanent ending.

She wakes up in 2026 inside Shin Seo-ri- unknown actress, mounting debts, career going nowhere. Dan-sim surveys the situation and concludes this is simply a different court. She has always been good at courts.
Then Cha Se-gye nearly runs her over. Cold, chaebol, perpetually important. They trade barbs. She immediately clocks him as the most powerful ally available and proceeds to embed herself in his life with the same unhurried precision she once used to conquer an entire dynasty.