Chadwick the Crab and Bernie the Sea Gull are worried that they're going to lose a good friend forever. Hester, a Delmarva fox squirrel, has discovered a book telling her she's on the endangered species list. Not only that, there's a mysterious monster lurking around Shady Creek. And all this happens just when Chadwick and Esmerelda are getting ready to welcome their big little family home. Chadwick Forever is the fourth book in a series about Chadwick the Crab.