Yue Fuling transmigrates into the palace, taking on the identity of a minor eunuch. Bizarre objects are continuously and quietly delivered to her hands, with invisible threats lingering like shadows. She only wants to live in peace and diligently fulfill her duties while staying away from trouble. Emperor Jun Jing suspects she is an assassin and specially takes her to the perilous Luohan Hall to test her. Perils erupt frequently along the way, and Yue Fuling, wholly focused on avoiding danger and seeking survival, remains completely unaware of the test, repeatedly disrupting the monarch's arrangements and causing all sorts of chaos.