The Su family in the capital city is a prominent family from three dynasties. It seems that there is harmony and harmony within the high walls of the wealthy family, but in fact there are turbulent undercurrents. The concubine has been frail since she was a child, but she has a hidden talent - she can see weird patterns that are invisible to ordinary people. These patterns are either hidden in embroidery or engraved on utensils, seeming to silently tell family secrets. Strange things have happened frequently in the Su family recently: the sister-in-law has disappeared without any reason, and no one has been seen alive or dead; the secret treasure of the house has disappeared from the warehouse, leaving only half of silk and satin with strange patterns; an old lady who is over sixty years old is suddenly bedridden, and her pulse is strange and difficult to distinguish. All the mysteries are wrapped around the forbidden place deep in the house, and the people around her have their own hidden agendas: the stepmother has a gentle smile, but there is a sinister hidden in her eyes; the brother-in-law seems to be a playboy, but in fact he is secretly cultivating power; even the father, who has always been taciturn, keeps secrets about the past. She used the power of strange patterns to secretly investigate, but found that every time she solved a mystery, a deeper conspiracy surfaced. The disappearance of the eldest sister is closely related to the theft of the secret treasure. The old lady's strange illness is caused by a man-made conspiracy. Even her own life experience is inextricably linked to those mysterious patterns. In the deep house, family ties are reduced to pawns, and morality is trampled by desire. She not only has to live step by step in the shackles of her concubine and inferiority, but also has to fight against the black hands in the dark. Are those flickering patterns the key to the truth, or a trap that drags her into the abyss? In this confusing situation involving the survival of her family and her personal destiny, she can only find a glimmer of hope in the shadow of a wealthy family by peeling off the cocoon.