Dragons of Mere Odain - Guardians of Glede: Beginnings, #4

Far away in the land of Mere Odain, a dragon calls out for help to her master--Pepin Merripen, now living as the son of Crown Prince Treyas Merripen and his wife, Cynthe. Pepin must answer, or die. Shocked and terrified, Treyas gathers his closest friends, and goes to Mere Odain. But the country is in turmoil. An ethnic cleansing is going on--any black or brown-skinned person must die. Treyas is determined to save his young son's life even if it means taking on the whole of the Keltin Empire and ending a war 40 years in the making.