The World is much bigger than you think, and it's not just what comes from elsewhere that can threaten it. As K and J continue to work at MIB, a new threat looms on the horizon, one of a kind they've never faced before. After eliminating a Mummy in Egypt, they go on a hunt for Little Gray Martians in Wyoming, but things go wrong. After being rescued by Modern Prometheus and a Sasquatch and helping them hunt a Wendigo, they discover that there is trouble in the vampire world. Indeed, because of a super-psychopath doped with a special serum, that J had interned years ago, Count Dracula has just been brought back to this World, and he intends to bring back the Ancient Demons, to return the Earth to its "true masters" ! K and J are therefore far from retirement and will have to come out of the big guns again, because they have certainly faced a lot of things in several years but, even for them, facing an immortal is a first !