Gamba: Ganba to nakamatachi

Dreaming of adventure, city mouse Gavin and his buddy Matthew join a crew of Ship Mice ready to set sail - just as young Chester bursts in, pleading for help. Stowing away on a boat, the gang heads for Dream Island to defend Chester's family of mice against Winston the White Weasel (Jon Lovitz) and his wicked weasel clan. But is their courage enough? (imdb)