HBO has released a full official trailer for The Last of Us, which spotlights the pivotal uneasy relationship between Joel (Pedro Pascal) and Ellie (Bella Ramsey) as they make their way across a post-apocalyptic US and try to escape a zombie outbreak. The series adapting the popular video game franchise will be coming to HBO on January 15.

More than any other clip or teaser trailer before, this one showcases the obstacles and enemies the pair will be forced to cooperate in overcoming. The show has stayed true to the design of the fungus-zombies and we’re even treated to a horrifying view of the awful Bloater at the very end. The trailer does a great job of pulling double-duty–reassuring PlayStation fans that the show will honor its source material, and also helping newcomers understand the world, characters, and story. Check it out below.

The trailer also demonstrates the show’s excellent casting. In late November, HBO released a series of character posters to get fans further pumped–here, you’ll see Storm Reid as Riley and Nick Offerman as Bill. We’re also shown plenty of Joel and Ellie bickering, and realizing that they need each other to survive.

Season 1 has 10 episodes and will largely cover the events of the first game. As showrunner Craig Mazin (Chernobyl) and series co-creator Neil Druckmann have said repeatedly, the show will wind up deviating from the games in a few ways viewers will have to watch to discover–though, for what it’s worth, pretty much every location in the trailer is recognizable from the first game.