When David Dunn, a security guard with superhuman gifts, is sent to a mental institution, he must contend with his archenemy Mr. Glass and Kevin Wendell Crumb, also known as "The Horde" for his multiple personalities, along with a psychiatrist trying to prove they do not have superhuman abilities.

"A genius of unrivaled aptitude, Stephen can learn any new skill, vocation, or art in a matter of hours. However, to contain all of this, his mind creates hallucinatory people-Stephen calls them aspects-to hold and manifest the information. Wherever he goes, he is joined by a team of imaginary experts to give advice, interpretation, and explanation. He uses them to solve problems . . . for a price. His brain is getting a little crowded and the aspects...