Watch We Are Not Alone for Free: How to Stream the Movie Online at 123Movies. . 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.