Six weeks after the Gu'un aliens have invaded and completely conquered Earth, hapless Stewart becomes the Gu'uns' official human liaison who ends up saddled with alien Greggs for a housemate. Stewart must help the Gu'uns deliver their message to the masses and win favour with humankind, while also aiding the human resistance and managing his enduring crush on Elodie.
Declan Baxter
as Stewart
Georgia May Foote
as Elodie
Bruce Mackinnon
as Wade
Evelyn Mok
as Hodge
Laurence Rickard
as Cirsh
Joe Thomas
as Greggs
Ben Willbond
as Darrenth
Mike Wozniak
as Gordan
Rob Delaney
as Bradel
Miles Jupp
as Former Prime Minister
Lucien Laviscount
as Robbie
Ellie White
as Sredstev
