The Limitless media franchise began with the 2011 science-fiction thriller film about a man who discovers a nootropic drug that unlocks 100% of his brain's capacity, giving him enhanced mental abilities. The film explores themes of power, addiction, and the ethical implications of such a drug. The franchise expanded with a TV series in 2015, continuing the story of the nootropic drug and its effects on different characters, focusing on a new protagonist.
Eddie Morra is a struggling author in New York City. His girlfriend Lindy, frustrated with his lack of progress, breaks up with him. Eddie encounters Vernon, the brother of his ex-wife Melissa, who gives Eddie a sample of a new nootropic called NZT-48. On the drug, Eddie discovers he has acquired perfect recollection of everything he has ever read and refined his interpersonal skills. His new power enables him to make significant progress on his book.
A young man who gains the ability to use the full extent of his brain's capabilities is hired by the FBI as a consultant.