A bird like alien race called the Cweom-jik discover Earth. Unable to conquer Earth directly they devise an indirect approach. They introduce clandestinely the technology of duplicators which collapse the humans economy. At the height of the chaos they introduce themselves and offer to help. By the late 21st century they rule the Earth with an iron claw.
Brent Erlanger is a man living in a small town in Ohio. He has the misfortune to be caught with the mayor’s daughter. Under Cweon-jik rule the puppet rulers have the power of life and death. The mayor has a nasty habit of executing his daughters lovers. Brent is forced to flee to escape execution.
After adventures in the wilderness and the ruins of Cincinnati he hooks up with the resistance. Taken to their secret base at Oak Ridge Tennessee he trains to become part of the resistance. An expedition to Cincinnati discovers an old military base that was working on captured alien technology. It gives the resistance knowledge on how to mount an operation to capture an intact Cweon-jik space craft.
This was an interesting book on an alien conquest of Earth. I like how it had the main character being a normal guy who rises to become the hero. The alien conquest and rule is handled in a realistic and believable manner.
The ending left it open for a possible sequel but I can’t find any that was ever written. Still it has a satisfying conclusion and I recommend it.
So remember beware of aliens that want to help you. You never know what their motives are.