Gerald the elephant and Piggie, who are best friends, play a game to surprise each other by a big rock and their fun takes a strange turn when Gerald gets worried.
Elephant, who is cautious and pessimistic, and Piggie, who is optimistic and sometimes reckless, go outside to play in the sun and hope that it does not rain.
Piggie realizes that she and Gerald the elephant are in a book and that she can make the reader say words, but when Gerald comes to understand the danger of the book ending, Piggie comes up with a solution to get the reader to keep reading.
Opposite best friends Gerald, who is careful and worrisome, and Piggie, who is clumsy and carefree, run into a problem when two birds land on Gerald's head.