In the French harbor city of Le Havre, fate throws young African refugee Idrissa into the path of Marcel Marx, a well-spoken bohemian who works as a shoe-shiner. With innate optimism and the tireless support of his community, Marcel stands up to officials pursuing the boy for deportation.
A submarine crew, a feared pack of forest bandits, a famous surgeon, and a battalion of child soldiers all get more than they bargained for as they wend their way toward progressive ideas on life and love.