Seussical is based on the works of Dr Seuss and weaves together his most famous tales and characters from his books. The show travels everywhere from the Jungle of Nool to McEligott's Pool to follow the adventures of Horton, an elephant who one day hears voices coming from a speck of dust. Although 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.