While Naughty Dog bosses Evan Wells and Christophe Balestra was on PS4 All Access to give us the first glimpse of Uncharted 4 they also took the time to premiere the story-DLC Left Behind for The Last of Us that's set to release next year on PS3.
In Left Behind we'll play as Ellie and she is joined by her friend Riley. We're not entirely sure how this episode fits into the timeline, but it seems an abandoned amusement park will figure and that surely can't be a good thing.