Piglet's Big Movie (2003)

As the Hundred Acre Wood friends embark on a honey-collecting adventure, Piglet feels left out, dismissed for his small stature. Overwhelmed by feelings of inadequacy, he decides to vanish. His loyal companions—Eeyore, Rabbit, Tigger, Roo, and Winnie the Pooh—embark on a quest to track him down, using Piglet's scrapbook as their guide. Along the journey, they uncover the many courageous acts of their tiny friend, realizing that true heroism comes in all sizes.