Juliette de Marcillac’s documentary follows the volunteers helping those crossing the French Italian border and shines a light on the the hypocrisies underpinning the treatment of asylum seekers With its rustic wooden chalets and spectacular alpine peaks, the French ski town of Montgenèvre has long been a popular holiday destination. Looking past these postcard-perfect vistas, Juliette de Marcillac’s absorbing documentary paints a very different picture, focusing instead on a humanitarian crisis