Farida is a student at the Faculty of Music Education in Zamalek.. At the end of her school days, she goes up to the third floor to practice on new musical compositions.. Farida notices that with the beginning of a certain musical note, the sound of gurgling water starts coming from the ceiling of the room, she hears the sound of water droplets, but she does not find any water. Once, Farida was searching for the source of the sound, and when she reached the music room, which had been abandoned for many years and forbidden to enter, she decided to break into that room, only to find inside an old, worn-out black piano, and everything began to play without a player.. That was the first moment it started. Everything Find out for yourself what will happen in the novel Black Sleep