When Finnikin was nine years old, he was warned that he must take a blood oath to save his kingdom, Lumatere.  He and his friends, the Prince, and Lucien of the Monts, shed blood and swore: 

The Prince to die defending the Royal House;

Finnikin that he would be the protector and guide to the Royal Family;

and Lucien that he would be the light toward whom they would travel in times of need.

Then the unspeakable happened: the Royal Family was massacred and the people separated.  Thousands of Lumaterans are now spread out across the neighbor kingdoms, starving and sick, unable to return to their homes.  Those remaining inside Lumatere have not been heard from in ten years.  Finnikin is travelling with his foster-father from refugee camp to refugee camp, when they are summoned by a rumor: the Prince may be alive.  If Finniken can find the Prince, together they may be able to take his people home.

Finnikin of the Rock is a fantasy, an adventure and a really well written story.  You'll love it.