'I Never Sleep' (also called 'Sleepless') is the story of Nadia Lotfi (Faten Hamama), a teenage girl raised by her father after her mother's untimely death. Her lifelong lack of a mother figure turns Nadia into a scheming troublemaker who causes problems at her boarding school. When she returns home, she learns that her father (Yehia Chahine) has re-married. Furious Nadia decides to set a plan in motion to get rid of her unsuspecting step-mother (Mariam Fakhr Eddine).