"Twelve Monkeys" is a science fiction television series that premiered in 2015, inspired by the 1995 film of the same name. The show follows a time traveler named James Cole, who is sent from a post-apocalyptic future to the present day to stop a deadly virus released by a mysterious group known as the Army of the Twelve Monkeys. Throughout the series, Cole teams up with Dr. Cassandra Railly, a virologist, as they navigate complex timelines and unravel the mysteries surrounding the virus and its origins. The show explores themes of fate, free will, and the consequences of time travel over its four-season run.