Bisou aide Nono à dire merci
Nono decides to build a giant windmill, but it proves difficult. Grongron spontaneously comes to help Nono. When it comes time to say thank you, Nono, who doesn't like to admit he needs help, says nothing, which greatly disappoints Grongron. Finally, Nono understands that “thank you” is much more than just a polite word—it's a way of expressing gratitude!