Justin Case returns for a summer camp adventure!Rachel Vail and Matt Cordell ratchet up the humor and heart as our favorite "worried kid" navigates the momentous transition from third to fourth grade.Can Justin survive summer camp, where there's a mess hall and (gulp!) swimming? Swimming requires two things Justin doesn't like: walking in flip-flops and changing into a bathing suit. Flip-flops hurts the space between his big toe and the next one. And changing, well, need we say more?Friends both old and new, getting picked for teams, and even his first crush make Justin realize that fitting in is just as important at camp as it is at school. His counselor is worried that Justin isn't cut out for camp. So are his parents and his little sister, Elizabeth. But Justin knows he can do it. If he's brave enough.