The Secret of Rover follows the clever and resourceful twins Katie and David as they race across country in their attempt to outwit an international team of insurgents who hold their parents and baby sister captive in a foreign land. Held hostage because they invented a spy technology called Rover that can locate anyone in the world, Katie and David’s parents are in grave danger. Now, it’s up to Katie and David to rescue them. But first they must find their reclusive uncle, whom they have never met—the only person they know who can help them
Katie and David love their new life, new home, and soon to be new sister. They can thank Rover, the top secret spy device Katie and David’s parents and uncle invented and the US government bought. Life was perfect until Katie and David’s parents are kidnapped on their way to adopt their new baby sister overseas. Katie and David must escape their new Nanny and locate their reclusive uncle to help them save their parents.