Nine-year-old twins Ava and Rosie are headed for adventure. City kids, they don't know what to expect from a small zoo in Iowa-and they have to live there for the rest of the year while their mom writes a book! Being away from the busy city and their friends feels like punishment, but Dad sets up a project for them all-running a zoo camp for students to attend during spring break. That could be cool, but as they're getting ready, the kids realize that some of the animals are missing! They'll have to solve the mystery-fast-before the campers arrive.Perfect for reluctant, challenged, and newly fluent readers, the Animal Planet Adventures chapter book series combines fun animal mysteries with cool nonfiction sidebars that relate to the stories, bringing the best of the animal world to young readers. With full-color illustrations and photographs throughout.Collect all of the Animal Planet Adventures books, including Amy and Elliott's story Puppy Rescue Riddle.