Arthur and D.W. travel to New York City with their mom and dad and visit the Statue of Liberty, a museum, and see a Broadway show! D.W. is most excited about visiting Mary Moo Cow Palace with her Mary Moo-Cow doll. When D.W. doesn’t follow her parents and goes off by herself, the family must find her. Luckily, Arthur knows where to find D.W.—Mary Moo-Cow Palace, of course!