Seussical the Musical

As a young girl, Jojo stumbles upon alone red-and-white-striped hat, its curious owner, the Cat in the Hat, introduces her to the wondrous world of Seuss. The Cat begins with the story of Horton the elephant who lives in the Jungle of Nool with Jungle Citizens, the Bird Girls, and several other unique creatures. One day, Horton is enjoying his bath when he hears a voice on a speck of dust asking for help. Horton delicately places the speck onto a clover. The cries of help return and this time, Mr. Mayor and Mrs. Mayor reveal themselves to Horton as citizens of a tiny place called Whoville. At this point, the girl from the beginning becomes Jojo, their daughter, and is blamed for the Cat's mischief.
As Horton tries to help the citizens of Whoville meets Mayzie who longs for a life of adventure, but is stuck sitting on her egg. In desperation she talks Horton into sitting on her egg instead, so she can leave.

So Horton has two dilemmas he must deal with and is helped (or hindered) by a jungle full of delightful characters.