Story of a knight who had a romantic encounter with a mysterious woman in the meadows.
She seduced him with her beauty and magicalallure, and took him back to her magical cave.
She then lulled him to sleep and abandoned him
In his sleep he saw kings, princes and warriors who had previously been seduced by the lady - they warned him of his fate, but it was too late.
He awoke alone, tormented by the memory of her.
Keats reverses the traditional medievalromance, normally a knight falls in love with a beautiful lady and has to win her over, but here the knight is seduced by the beautiful woman and she ruins him.