From the Back of the Book:
Valorous and Loyal...
...serving his god, his lord, and his lady, the knight is the archetypal hero. Not for him cunning words or tricks, nor disguises and ambushes. The knight faces his enemies boldly on the field of combat. The life of a knight is full of quests, tournaments, and epic battles recounted in poems for the pleasure of his lady-love. The classic image of a knight is a paladin in shining plate armor, mounted on a warhorse. But knights can range far from this sterotype; members of any character class, social class, race, or sex can follow the the path of chivalry.
This sourcebook investigates chivalry in detail, giving knightly options for PCs and ideas for GMs to use in designing adventures.