The title is a calembour between emigrates and 'gratis' (free in Italian.). Each episodes tells the adventure of Pio and Amedeo, two pugliesi (from Foggia, Apulia) that travels around the world, trying to live for free in the cities where other emigrated friends (famous or not), moved to. They're the Kings of sponger, so they basically have no shame in asking money or food to everyone, while stalking girls or ruining parties or dinners.