In an alternate timeline 1984, Jamaica’s crown jewel is Nu Kingston—a retro futuristic metropolis where gang lords control hordes of zombie-like addicts with a drug called Slime. The worst among them is BadMan Jones, who is prophesied to wipe out humanity for mysterious extraterrestrials. As Slime spreads to every corner of the island, Major Lazer can no longer maintain neutrality and must rely on new weapons and old comrades to prevent total apocalypse.