Deltora Quest begins with the legend of Adin, a blacksmith who forged the Belt of Deltora from seven powerful gems, each taken from one of Deltora's seven tribes. With the belt's power, Adin drove back the Shadow Lord's first bid to seize the realm and was crowned king, but the victory only hid a threat that would return centuries later.
By the time the Shadow Lord rises again, his name has almost disappeared from memory and the people of Deltora have come to see the monarchy as distant and uncaring. He shatters the Belt of Deltora, scatters its seven gems across the continent, and claims the castle for himself. Endon, the young king, and his wife escape with the help of Jarred, a close friend who is forced into hiding, and the kingdom falls under years of tyranny.
Lief, Jarred's son, is raised and trained for one purpose: to recover the scattered gemstones and rebuild the Belt of Deltora. Together with Barda and Jasmine, he crosses the continent, confronting devious enemies and dangerous beasts as he works to reunite the gems, overthrow the Shadow Lord, and restore peace to Deltora.