The premise this time is that Piggie's recently acquired ball has been snatched by some unknown creature, one so big that Piggie begs Gerald to intervene. But Gerald's perceived power and genuine desire to help his smaller friend cannot provide him with sufficient courage once he sees that he'll have to confront an enormous whale. Outward appearance is rarely a true indicator of inner feelings, though, and the same reality is reflected in the whale, who turns out to be a gentle giant who is remarkably polite. Size should never be a factor in determining friendship, and Willems's two pals are happy to have a new playmate. The story engages readers with delightfully familiar cartoon illustrations and invites them to follow it independently by reading the speech bubbles.