The comedy in this lively film barely conceals its darker, more serious undertones as it chronicles a young Algerian's eye-opening introduction to the joys and travails of being an immigrant in Paris. Alilo has left his home to pick up an important suitcase for his employer. Unfortunately, he has lost the Parisian address. Fortunately, his cousin Mok, emigrated there several years before with his middle-class family before and is able to act as a guide. Mok, an aspiring rap singer, comes from a middle-class family, but chooses to live on his own in the dilapidated deteriorating 18th district, known as 'Moskova.' Mok characterizes the place as a haven for artists and intellectuals, but it is plainly just a Third World slum filled with tightly knit and colorful neighbors. Mok and Alilo have many interesting, some tragedy-tinged adventures over the five days it takes them to find the suitcase.

Mok et Alilo sont cousins mais leurs vies sont complètement différentes : Mok né en France, habite Paris alors qu'Alilo est né au pays, à Alger avec les règles de la famille. Alilo arrive d'Alger à Paris pour ramener une valise au pays mais il perd l'adresse du correspondant. Ce contre-temps obligera les deux cousins à mieux se connaître et à voir leurs différences...