When ten-year-old Tomas and his friends visit the National Air and Space Museum in Washington, D.C., he sees the Apollo 11 Lunar Module and suddenly finds that he has become Neil Armstrong as he makes his historic walk on the moon in 1969.
While on a visit to the Anacostia Museum of the Smithsonian Institution, Emma finds herself going back in time where, as a runaway slave, she uses the Underground Railroad to make her way to Canada.
While visiting the Pony Express exhibit at the National Postal Museum, Kevin travels back in time and becomes Warren Upson, a famous rider with a difficult route.
