Odo and Eleanor, poking about in a river that was rapidly sinking despite the rain, were looking for eels. What they found was a magical sword.
It cut Odo's finger, and the blood roused it - the blood of a true knight. Except he's not. So the sword knights him on the spot. And with one thing and another, Eleanor becomes his squire, and they set out to find out why the river is failing.
A light high fantasy ensues.
It involves Eleanor's father rebuking the sword for asking for his name without giving his own first, as the stranger; a woman who lives in a chapel; the draconian origin of a firestarter, a duel and a wrestling move; something that smokes like a dragon; the question of armor; what a certain knight is like, and more.