Sir Ballister Blackheart is the resident villain. And like all resident villains, he has a backstory that totally explains how he went from a promising knight in training to a mad scientist. And like all resident villains, he often finds his brilliant plans foiled by the resident hero, Sir Ambrosius Goldenloin.
That is, until the mysterious Nimona shows up. Nimona is a shapeshifter and an agent of chaos who dramatically increases Blackheart’s effectiveness while also ramping up the destruction factor. As Nimona and Blackheart tag-team to defeat his archnemesis, the shadowy Institution that runs everything, it soon becomes clear that they might not be the most villainous characters in the land after all. . . .