They were ambushed before they could even reach the next village! The Horned King had sent his minions to capture Hen Wen, and Taran gave desperate chase, all the way to the castle of the villain. He and Gurgi snuck in, and stopped Hen wen before she could fully show the whereabouts of the cauldron. Taran managed to help Hen Wen escape, but he and Gurgi were captured, and locked in the dungeon. Much to their surprise, there were other prisoners in the dungeon... a wandering minstrel named Fflewddur Fflam, and a beautiful princess named Eilonwy. The four of them decided to work together to escape the dungeon, because Taran understood Hen Wen's interrupted oracle...
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He knew how to get the Cauldron!