A 12-year-old boy searches for the one thing that will enable him to win the affection of the girl of his dreams. To find it he must discover the story of the Lorax, the grumpy yet charming creature who fights to protect his world.

The Once-ler, a ruined industrialist, tells the tale of his rise to wealth and subsequent fall, as he disregarded the warnings of a wise old forest creature called the Lorax about the environmental destruction caused by his greed.