While it is certainly true that The Black Cauldron lacks a lot of the charm later animated Disney movies became known for, it is hard to find anything terrible enough about it for it to have the legacy it does. It is a pretty classic fantasy story, focusing on the farm boy Taran who daydreams of one day becoming a mighty hero. When the tyrant Horned King appears, Taran has his chance to prove himself.
Taran, Princess Eilonwy, and the friendly creature Gurgi join forces to try and stop the Horned King from locating the eponymous black cauldron. If the evil overlord does, he will use the cauldron’s magical abilities to take over the world by summoning an invincible army of the undead.