Book-transmigrating woman Zhong Yiyao becomes a Marquis Mansion maid, wanting only to wait out her indentured servitude and leave the mansion. Unexpectedly, her inner voice is heard by the Old Marquis, Marquis Shen Mingli, and Madam Zhao, who use it to see through the conspiracy of love-brained young master Shen Zhaoning and the Liu family, step-by-step resolving crises such as smuggled salt framing and fake account framing, and preserving the entire Marquis Mansion. Ultimately, the Marquis Mansion burns her indenture to return her freedom, recognizing her as an adopted sister.