Today at Sony's PS4 event Naughty Dog revealed Left Behind, the first story-based DLC for The Last of Us. The teaser trailer showed Ellie along with Riley Abel, her friend from back during her school days in the Quarantine Zone.

Those who have read the Dark Horse comic run of The Last of Us: American Dreams, co-written by TLOU writer Neil Druckmann and artist Faith Erin Hicks, will be familiar with Riley. She was Ellie's friend back when Ellie was in school in the quarantine zone. In the game, Ellie explains to Joel what happened to the two of them, the comics only show the two of them meeting and becoming friends.

If you've read the comics (which are great, and you really should) and played the game, you'll agree that this DLC will probably involve… emotions.

Sony has shared a bunch more information about the DLC, which will release in early 2014 for $14.99.

The Last of Us: Left Behind is Naughty Dog's first ever single-player DLC. Bruce, Neil, and the rest of the team are getting close to wrapping work on this new campaign, which will meet the quality and gameplay what you've come to expect with The Last of Us, along with a few surprises.

She's back! Ashley Johnson reprises her role as Ellie in The Last of Us: Left Behind single-player DLC. Left Behind takes place while Ellie is attending a military boarding school in the Boston quarantine zone, prior to meeting Joel and the events in the main campaign of The Last of Us.

In just a few short months since the release of The Last of Us, you have made it clear that Ellie has become one of your favorite characters in games. Today, we're excited to confirm that you play as Ellie throughout the entirety of Left Behind.

Joining Ellie on this new adventure is Riley, her best friend and also a mentor of sorts at the military boarding school. Just as The Last of Us focused on the bond between Ellie and Joel, Left Behind explores the bond between Ellie and Riley through a series of events that will forever change both of their lives.

Bringing Riley to life through our performance capture process is the talented Yaani King, who we had the pleasure of working with on the DLC.

If you just can't wait until the DLC drops to get more of The Last of Us, go out immediately and read the Dark Horse comic series, The Last of Us: American Dreams – which is conveniently available in the recently released paperback collection. I cannot recommend this series enough and it's even more relevant now, as in the comic you will learn more about how Ellie and Riley first became friends, giving you even more insight into Ellie's story in The Last of Us universe. And it's also just plain great!

The Last of Us: Left Behind will be releasing in early 2014 – we will announce a specific date as soon as we iron out all the details. The awesome news is that Left Behind is included in the The Last of Us Season Pass, which also includes a ton of multiplayer DLC, and is the best deal you can get for all the DLC content we've planned to release – over 75% worth of savings compared to buying all the DLC separately. If you're only interested in the single-player DLC, you can pre-order it starting November 19 on the PlayStation Store for $14.99.