As the enemy AI grows stronger, the world is more deadly.Block must do everything in his power to track down Wally, the little girl he cares for. But how does a harmless CleanerBot infiltrate the deadly SoldierBots who hold her captive?Block and his motley crew of renegade robots journey across war-ravaged wastelands to track Wally down in a desperate race against human and AI foes. The ominous super-intelligence Mach X has devastating plans for Wally.If you enjoy characters that tug at your heart and page-turning adventures, then you'll love the third book of this post-apocalyptic sci-fi series and its robot main character.