The girl Ji Ran mysteriously traveled to another world, but unfortunately she was involved in His Majesty the Emperor's concubine selection. After rounds of auditions, Ji Ran passed all the tests and entered the semi-finals.
She knew very well that "accompanying a king is like accompanying a tiger" and "the depth of the harem is as deep as the sea". She originally just wanted to find a warm man to marry. However, unfortunately, she fell into the arms of a cold and ruthless king and became his exclusive favorite, the world-famous princess...