A fun family vacation quickly turns into a thrilling investigation for two famous twin detectives. Mary Kate and Ashley are visiting the incredible sights of Washington D.C., and they cannot wait to explore the amazing exhibits at the Smithsonian Air and Space Museum. But while they are admiring the legendary Wright Brothers airplane, something impossible happens. The historic plane begins to shake, and eerie, mysterious voices echo out from the empty cockpit. Is the museum truly haunted by a flying phantom, or is someone playing a very elaborate trick? The twins know they cannot just walk away from a mystery this exciting. Teaming up to gather clues and interview suspects, they must uncover the secret behind the haunted machine. Will they solve the case before the phantom disappears forever? Join the ultimate detective duo for a fast paced adventure filled with suspense, teamwork, and spooky surprises.