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...