Two teenage boys star in Matteo Garrone’s passionate expose of how greed, trauma and corruption drive the modern-day slave trade in would be migrants. His new film is part adventure story, part slavery drama.Seydou and Moussa, played by nonprofessional acting newcomers, dream of escape to the fabled land of the EU as refugees, where they expect to go viral and make a fortune as music stars like the people they’re watching on TikTok. For years they have been writing songs and secretly working on building sites while pretending to go to football practice, amassing cash savings which in the succeeding months they will hand over to various gangmasters, fixers and corrupt gun-wielding soldiers.Seydou and the others are not exactly masters of their fate, or captains of their souls. They are swept along by power and inequality, but Garrone shows that their humanity and compassion remain buoyant.