Harry and Michel live in the basement of a luxury apartment block, guarding its residents. Over the course of a weekend, the residents leave the block one by one - all apart from a man on floor 29. In the grey, airless monotony of the basement, Harry and Michel stick to their posts. The world might be at war or plunged into nuclear winter; they may be the last inhabitants in the city. All they know is that if they are vigilant, 'the organisation' will reward them: promotion to an elite cadre of security officers remains their shining goal, and their days are punctuated by vivid dreams of everything they are missing. But what if there were no-one left to guard? And if the promised third officer arrives, how will he fit into Michel and Harry's studied routine of boredom and paranoia?