Nisida, moored like a boat, is a small island nestled between Capri and Bagnoli, off the coast of Naples. This is where Elisabetta Maiorano does sums at the blackboard with a mixed group of young inmates in a juvenile detention centre. She is fifty years old, she lives alone and every morning she crosses the city to teach maths. But one day, Almarina shows up in her classroom and everything changes. She is Romanian and bears the signs of her personal history on her body. Together, closed up in a small classroom, a true island within an island, they discover a possible pathway to salvation.Warm, intimate, and political, Valeria Parrella precisely touches our emotions, giving voice to a loneliness whose power will move us.