The Dragons of Midsummer Valley

Dragons used to rule the earth. They were the ultimate predator and nothing could stand against them.
Then humans came along.
In a modern world, four young dragons find their way in a planet overrun by humans, and continue the search all dragons endure; the search for their true home.

(Just a note, you pronounce Eroy as ee-roy, Cyrn as sigh-rin, Ignius as igg-nee-us, and Breve as breev.)