During an attempt to escape the 7 Hour War, we were ambushed by the Combine and separated from our friends. Surprisingly, we were transported into what seems to be an old Aperture Science warehouse. While being transported on a rail through the remains of the facility, the transportation system collapsed due to damages caused by the waging war, plunging us into the depths of the facility. Abyss isn't the typical linear game. Set in an alternate timeline, it focuses on the storytelling by introducing choices and consequences. Your life depends on your actions, and you will never know what is coming next.