"The Nun's Priest's Tale" is a story from The Canterbury Tales by Geoffrey Chaucer. It features a clever rooster named Chauntecleer who is known for his beautiful singing. The tale revolves around his encounter with a cunning fox that tries to trick him into being captured. The story highlights themes of pride and the importance of being cautious. Chauntecleer initially falls for the fox's flattery but ultimately outsmarts him. This fable-like narrative serves as a moral lesson about the dangers of vanity and the value of wit in overcoming challenges.