Romarin and his friend Tonin are two brave Provençal poachers who are not afraid. Romarin spends most of his time in his shed or on his boat, protected from customs controls. Tonin, a handsome guy with a tanned complexion, has many romantic adventures. For the moment, he is interested in the daughter of Larquus, a grocer from Cassis, the pretty Nine, who also covets the shady customs brigadier, the Corsican Napoléon Orsini.