Modern forensic doctor Su Wan accidentally traveled through time and became the "conqueror" of the Dasheng Dynasty who was thrown into the cold palace. A dry well with broken knives and a musty smell permeated the air. This forgotten and cold palace turned out to be a place where corpses were hidden. Relying on her professional forensic knowledge, she started from the case of the sudden death of a palace maid, conducted anatomy, tested for poisons, followed clues, and uncovered the hidden poison conspiracy in the harem. The imperial eunuch Xiaoluzi secretly helps, and the queen's forces are closing in step by step. The missing old files, the bloody jade pendant, and the strange lotus sachet all point to the shocking secret deep in the palace. Su Wan used the cold palace as his base, cut through the layers of fog with a scalpel-like sharpness, explored the truth on the edge of life and death, and bucked the trend in the harem whirlpool.
