Carlota: Alhajero de Secretos is set in a house where time has stopped. Carlota, the family's matriarch, lives here with her three daughters: Mari Fer, the eldest who sweats nonstop; Mari Pepa, the narcoleptic middle child; and Mari Tere, the youngest who is in love for the first time. Carlota keeps the house in perfect order with the help of Prudencia, her housekeeper, and Soledad, her most constant companion. After the family attends the funeral of a man from Carlota's past, the order she has worked so hard to keep is upended, leaving Carlota to reckon with the repercussions of her rules.