Who or what exactly is a Heffalump? The lovable residents of the Hundred Acre Wood -- Winnie the Pooh, Rabbit, Tigger, Eeyore, Kanga and the rest of the pack -- embark on a journey of discovery in search of the elusive Heffalump. But as is always the case, this unusual road trip opens their eyes to so much more than just the creature they're seeking. When Roo sets off on his own into the Hundred Acre Wood, he discovers a friendly and playful Heffalump named Lumpy.