Young Prudence Daniels lives in a United States devastated by terrorists who have created small robots. African clawed frog's eggs were used to develop robots with artificial intelligence. These robots destroy everything in their paths. Only specially developed domes protect newly forming cities and crops.
When Prudence's grandmother dies, she is taken to a nearby city to work for the evil Smyrnaff family. The Smyrnaff family rules the city with an iron fist. The citizens are forced to work for the wealthy family while they live in poverty. Fortunately, she meets the man who her father sent to save her from the attack. Tom is a brilliant computer specialist who has learned to use the frogs for good. He also knows the journey Prudence must take to find her father.
Prudence travels across the United States to share Tom's Frog Bots with others. As she travels, she learns about her own history and grows in her faith in God.