A gigantic Unidentified Flying Object materialized over the capital of Earth - terrifying the world.
The ancient Chameleon race wants to work with Humans to stop the genocidal Titans. The Chameleon are humanoid but have an AI chip implanted in their brain, which gives them unique abilities.
Henry Gallant's exceptional ability to interface with AI makes him the key to negotiating a mutual defense treaty and obtaining the alien's superior stealth...