L’invité de Belle

My name is Belle, and my life in the castle with my Prince is a true happiness! But right now, I have a big problem. Philibert, my beloved horse, is not feeling well. He looks so sad in his stall... And even though I'm trying hard to make him smile, it doesn't seem to be working. What's going on? My friends Lumière, Big-Ben and Zip may have an idea...