The Ogre's Pact

The Ogre's Pact by Troy Denning is book one of The Twilight Giants trilogy.

"For a millennium, the men and giants of the Ice Spires have coexisted in perfect harmony, answering to a single dynasty of human kings.

A thousand years of peace Is about to shatter.

Ogres have captured the king’s daughter, and only one man has the courage to go after her. But first, he must uncover the kingdom's most jealously guarded secret."