Vampires have assimilated into modern society, which has a dedicated Supernatural Creatures Administration Bureau, commonly known as the Supernatural Bureau. They must conceal their identities and follow rules such as “never drink blood from living humans without permission” (they get by on “synthetic blood packs” from the supermarket) and “never use supernatural abilities in front of humans.” But this couple is always pushing the boundaries of the rules, getting into all sorts of hilarious mishaps.