Sir Launcelot and Sir Lionel depart in search of adventure.
So when King Arthur confirmed Sir Launcelot's permission Sir Lionel also made himself ready very joyfully, and early of the morning of the next day they two took their leave of the court and rode away together; the day being very fair and gracious and all the air full of the joy of that season--which was in the flower of the spring-time.
So, about noon-tide, they came to a certain place where a great apple-tree stood by a hedge, and by that time they had grown an-hungered. So they tied their horses near-by in a cool and shady place and straightway sat them down under the apple-tree in the soft tall grass, which was yet fresh with the coolness of the morning.
Sir Launcelot sleepeth beneath an apple-tree.
Then when they had ended their meal Sir Launcelot said: "Brother, I have a great lust to sleep for a little space, for I find myself so drowsy that mine eyelids are like scales of lead." Unto which Sir Lionel made reply: "Very well; sleep thou for a while, and I will keep watch, and after that thou shalt watch, and I will sleep for a little space." So Sir Launcelot put his helmet beneath his head and turned upon his side, and in a little had fallen into a sleep which had neither dream nor thought of any kind, but which was deep and pure like to a clear well of water in the forest.
And, whilst he slept thus, Sir Lionel kept watch, walking up and down in the shade of a hedge near-by.
Sir Lionel perceives how one knight pursues three knights.
Where they were was upon the side of a hill, and beneath them was a little valley; and a road ran through the valley, very white and shining in the sunlight, like a silken ribbon, and the road lay between growing fields of corn and pasture-land. Now as Sir Lionel walked beside the hedge he beheld three knights come riding into that valley and along that road with very great speed and in several clouds of dust; and behind them came a fourth knight, who was very huge of frame and who was clad altogether in black armor. Moreover, this knight rode upon a black horse and his shield was black and his spear was black and the furniture of his horse was black, so that everything appertaining to that knight was as black as any raven.
And Sir Lionel beheld that this one knight pursued those other three knights and that his horse went with greater speed than theirs, so that by and by he overtook the hindermost knight. And Sir Lionel beheld that the sable knight smote the fleeing knight a great buffet with his sword, so that that knight fell headlong from his horse and rolled over two or three times upon the ground and then lay as though he were dead. Then the black knight catched the second of the three, and served him as he had served his fellow. Then the third of the three, finding that there was no escape for him, turned as if to defend himself; but the black knight drave at him, and smote him so terrible a blow that I believe had a thunderbolt smitten him he would not have fallen from his horse more suddenly than he did. For, though that combat was full three furlongs away, yet Sir Lionel heard the sound of that blow as clearly as though it had been close by.
Then after the black knight had thus struck down those three knights he went to each in turn and tied his hands behind his back. Then, lifting each man with extraordinary ease, he laid him across the saddle of that horse from which he had fallen, as though he were a sack of grain. And all this Sir Lionel beheld with very great wonder, marvelling much at the strength and prowess of that black knight. "Ha," quoth he to himself, "I will go and inquire into this business, for it may haply be that yonder black knight shall not find it to be so easy to deal with a knight of the Round Table as with those other three knights."