Veteran mission-taker Lin Chuchu dies in a quick transmigration world, only to wake up back in her first mission world: the palace struggle where she once suffered a crushing defeat. This time, she hides her sharp edge and pretends to be the original owner's timid self, quietly weaving her plans deep within the palace.
Su Yunche, a seemingly mild-mannered live-in son-in-law, is actually an inspector. He watches her day and night, but gradually notices something amiss. Shen Qingyue, a newcomer who has transmigrated into a book, uses her knowledge of the plot to pressure Lin Chuchu at every turn. Behind the scenes, Lu Zhi watches coldly from the System terminal, ready to eliminate the “glitch” once again.
With the arrogant, jealous Consort Xiao to deal with on one side, and various factions to navigate on the other, Lin Chuchu smiles while ice glints in her eyes. This time, she'll send every traitor tumbling down the dead end she has laid for them.