There is a town there inhabited only by animals. A river runs through it. The animals that fly have their homes on the right bank. All the animals that don't fly live on the left bank. All but one. Who is that? His name is Plouploufski. He is a little flying fish who cannot fly. Well, not yet...
Poisson vit en eau douce. Poissonne vit dans la mer. Un jour, Poissonne adresse une lettre enrubannée, parfumée, décorée, une lettre d’amour à Poisson. Alors Poisson engage un grand voyage semé d'embuches pour la rejoindre et concrétiser son sentiment amoureux.