Based on the characters and stories of Dr. Seuss, Seussical is the Broadway musical that  follows the adventures of Horton, an elephant who one day hears voices coming from a speck of dust. He soon discovers that within this tiny speck exists the smallest planet in the universe, and upon this tiny planet, live a tiny race of creatures known as Whos!  Despite being ridiculed by the other animals in the Jungle of Nool for believing in something he cannot see, Horton stubbornly persists in his belief that the Whos exist.

Meanwhile, the citizens of Who are having some adventures of their own, including a war over which side of the bread gets buttered. Jojo, the smallest child in the city of Who, parallels Horton's journey as he is ostracized for the unpopular act of thinking outrageous thinks--an activity not encouraged by the parents and teachers of Who-ville.

But in spite of these obstacles, Jojo and Horton attempt to do what they think is right, and together they sing the duet "Alone in the Universe." However, their path will not be easy. Horton is sold to the Circus McGurkus and eventually goes on trial before Judge Yertle the Turtle. 

Will Gertrude ever get Horton to pay attention to her?  Will the dennizens of Nool really boil all of Who-ville in a steaming pot of beezlenut oil.?  Will Jojo really have to spend the rest of his childhood in military school under the questionable training of General Genghis Kahn Schmitz?  What's inside that egg that Horton's been egg-sitting for 51 weeks?   Will the other animals of the jungle come to understand, as Horton has always known, that "a person's a person, no matter how small"? 

It's a riotous show jam-packed with toe-tapping tunes and knee-slapping Seussical humor--and more than a few lessons for all of us.