This summer, Justin is worrying so much less then he used to that he decides to sign up for the runny-aroundy summer camp instead of his usual science camp. Upon arrival, he is overwhelmed by deep swimming pools, rowdy sports, tough kids, and a mean, shouty councilor. Just when Justin thinks he can't take any more, he finds a reserve of inner strength that allows him to shine, and even to save the day.

"Pig is so incredibly kind and fabulously fun, but he also has a big secret--he's a tremendous worrier! When Pig gets the brilliant idea to throw a party for Mouse and their friends, he can't help but think of everything that could possibly go wrong. After all, what if a lion eats all the invitations? What if nobody comes? or wor¡se, what if everyone comes and has an awful time?"-- Provided by publisher.

Tiger unwittingly helps some worms overcome their fear of tigers with a well-placed, informative book, but will a wormy hug aid a fearful Tiger?