Eight short stories dealing with events that preceded the birth of Taran, the Assistant Pig-Keeper and key figure in the author's five works on the Kingdom of Prydain.

Whoever releases the mysterious Black Cauldron's powers will be invincible! The fearsome Horned King will do anything to possess it, but he is challenged by the most unlikely adversary: a young assistant pig keeper named Taran. With a motley team of the brave Princess Eilonwy, a minstrel named Fflewddur Fflam, and Hen-Wen, a remarkable pig who can predict the future, Taran embarks on a quest to stop the Black Cauldron's evil once and for all.