Mas negro que la noche

In Mexico, the young Ofelia Escudero shares an apartment and expenses with her friends, the librarian Aurora; the newcomer Marta, who is an unemployed model and actress; and the divorced Pilar. Out of the blue, a lawyer summons Ofelia to tell her that she has inherited a large real estate with an old house from her Aunt Susana that Ofelia met once, since she is the last relative alive from her family. In her will, Aunt Susana begs only that Ofelia takes care of her beloved black cat Bequer. She moves to the house with her friends, where they meet the old housekeeper Sofia, who lived her entire life in the house, and Bequer. Ofelia befriends Sofia, and treats Bequer, but her friends hate them both. Unexpectedly Bequer vanishes and one night, Ofelia is returning home with her fiancee Roberto, her friends show her that Bequer was locked in the attic and has died of starvation. Sofia and Roberto bury the animal and soon strange and tragic things happen in the house.