Horton Hears a Who! (2008)

Horton, a caring and imaginative elephant, discovers a speck floating in the air that contains the city of Who-ville. Despite ridicule and opposition from his neighbors, Horton resolves to protect the speck and find it a safer home. Along the way, he faces dangers and challenges that have a catastrophic effect on Who-ville. With the help of the Whos and a change of heart from his adversaries, Horton successfully saves the speck and teaches everyone the value of empathy and belief in the unseen.