[2] Overwhelming (if disputed) evidence suggests that Chaucer wrote the poem to commemorate the death of Blanche of Lancaster, wife of John of Gaunt.
[3] At the beginning of the poem, the sleepless poet, who has suffered from an unexplained sickness for eight years (line 37), lies in his bed, reading a book.
The story tells of how Ceyx lost his life at sea, and how Alcyone, his wife, mourned his absence.
The poet dreams that he wakes in a chamber with windows of stained glass depictions of the tale of Troy and walls painted with the story of The Romance of the Rose.
The poet stumbles upon a clearing and finds a knight dressed in black composing a song for the death of his lady.
The poet takes the message literally and begs the black knight not to become upset over a game of chess.
The poet, still not understanding the metaphorical chess game, asks the black knight to finish the story and explain what was lost.