While Gandalf the Grey and Saruman the White busy themselves with the affairs of Elves, Men, and the speaking peoples of Middle-earth, the smaller folk of fur and feathers are the concern of the Brown Wizard, Radagast.
Outwardly Radagast the Brown is a gentle hermit, soft in character and mind, often absent-minded and fumbling, with tattered robes and mismatched footwear; his raiment home to a bewildering menagerie of miniature beasts and fungi. This faade is an illusion so complete even the Wizard himself is sometimes fooled, but in truth great power resides within him, as it does in each of the five Istari, and he is ever watchful for the return of the enemy against whom he was sent from the West centuries ago.
Having made his home at Rhosgobel near the borders of what was once Greenwood the Great, Radagast tends to the needs of the animals that live in the darkening forest. A terrible sickness has infected Middle-earth's wildest wood, an unnatural blight that the worried Wizard traces to the old fortress of Dol Guldur with the help of his animal friends. Something ancient and unearthly stirs in the shadows of the ruin. A dark power gathers its strength beneath the choking thorns, a power that will soon put the courage and cunning of Radagast and his fellows to the ultimate test.