It's been months since Benji's former therapy dog, Elvis, was whisked away by the Secret Service, but Benji still misses him terribly. Luckily, because Elvis is now the president's dog, Benji can keep tabs on him via all the pictures and videos that are online. While watching footage of the president's speech on the White House lawn, Benji and his friends Alexander and Taisy notice Elvis doing something very strange with his tail. Could he be trying to send them a message? And so begins another madcap adventure in which these underdog best friends will have to find a way to get to DC, discover the truth behind Elvis's secret-coded cry for help, and solve a national pastry crisis . . . or Benji may have to say good-bye to his beloved Elvis for good.