Trieste. An old apartment in an old building. It’s where Pietro lives out his weary life, until his solitary daily routine is shattered by an eviction order. But the old man doesn’t want to leave so he devises a strategy to continue living secretly inside the house: he builds a wall at the end of the long corridor that runs through the apartment and adds a grate to let air in, an aperture to simulate a skylight and a few peepholes so he can study the moves of the enemy (the owner and the potential new tenants) – a vertical hiding place into which he disappears. His fear of being discovered becomes an obsession and every little thing makes him jump with terror: the whistle of the wind, a shadow, a creak. Then one day, ‘the enemy’ actually arrives: a desperate mother who wants to guarantee her daughter a roof over her head. How will Pietro react? And what form will his war take?