Activision has released a new trailer for Call of Duty: Ghosts that focuses this time on Episode 1: Nightfall , the new episode of the history of Settlement that will be present in the DLC Onslaught. The video shows us locations and aliens who meet in the episode, which Activision describes it thus: " In a structure in the remote Alaskan wilderness, the mysterious Nightfall Program is investigating the origins of the" Alien "threat. When scientists lose control however, a small squad of elite soldiers is having to retrieve information, eliminate hordes of hostile creatures and survive a three-story tall terror ever faced before. "