The Last of Us "Left Behind" DLC Stars Ellie, First Trailer Released

The Last of Us gets its first piece of story DLC next year, and it stars Ellie. See the first trailer through the break.
Called Left Behind, the DLC is due in early 2014 and puts players in control of Ellie, Joel’s young companion.  It will also feature Riley, Ellie's friend that was mentioned in her Journal.
The short trailer below was aired during the Spike TV PS4 All Access event.