In the 28th century, Valerian (Dane DeHaan) and Laureline (Cara Delevingne) are special operatives charged with maintaining order throughout the universe. The two embark on a mission to the breath-taking city of Alpha, a vast metropolis, home to species from all over the universe. A dark force threatens the peaceful existence of the City of a Thousand Planets. Valerian and Laureline must race against time to identify this threat and safeguard, not just Alpha, but the future of the universe.