From the back cover:
"A d20 System sourcebook expanding the Ragnarok! Tales of the Norse Gods setting. Players take the role of lesser gods and goddesses from the Norse pantheon, struggling to avert the Doom of the Gods foretold by Odin, called Ragnarok. New classes, monsters, magic items and skills help equip your character for epic struggles. Two of the Nine Worlds of Norse mythology come alive: Jotunheim, land of the frost giants, and Nidavellir, home of the dwarves. Includes an epic quest, 'Bride of Grivensir,' plus many plot hooks to extend your Norse campaign."