GKids ; Didier Brunner, Viviane Vanfleteren, Paul Young present a France-Belgium-Ireland coproduction ; Les Armateurs, Vivi Film, Cartoon Saloon, France 2 Cinéma ; Flatiron Film Co. ; GKids presents ; a film by Tomm Moore ; screenplay by Fabrice Ziolkowski ; director, Tomm Moore ; co-director, Nora Twomey