After a lifetime of rivalry, the supervillain Megamind finally defeats his nemesis, the hero Metro Man, only to find himself without a purpose. Bored and depressed, he creates a new hero, but his creation, a cameraman named Hal, turns into a new and even more dangerous villain named Titan. Realizing the mistake, Megamind must now become the hero to save the city from his own creation. The story explores themes of identity, purpose, and the idea that one's destiny is not defined by their past.