SF comedy set after Earth has been invaded by a race of aliens, the Gu'un. A hapless human called Stewart is appointed the Gu'un's official liaison, is saddled with an alien housemate and must deliver their message to the masses.
Stewart's plan to boost alien popularity via social media goes awry - in doing so, he attracts attention from anti-alien resistance fighters who tap into Stewart as a potential mole.
Stewart tries to broker peace between humans and aliens, but as Grieves goes rogue, Stewart finds the future of the entire planet is at stake... and it's all resting on his shoulders.