Brahim and his family are of Moroccan descent, and live on the grounds of a crane construction factory in Paris, where Brahim's father is the caretaker. Every evening, after the plant manager and his employees have left, Brahim and his 13-year-old brother Larbi help their father clean the empty offices. The children suddenly find themselves the rulers of an immense kingdom, where their curiosity and imagination run wild. Standing at the end of the factory yard is an old crane and, when night falls, it inspires Brahim’s imagination, working its way into his dreams.