Following the introductory scene, you will initiate a chat with one of your old squadmates from the original Mass Effect: either Ashley Williams or Kaiden Alenko (depending on the sex of your character or a choice made in the previous title if you imported a save or made that choice in the introductory comic). When the conversation is over and a little more cinematic action is forthcoming, you will take control of Commander Shepard.
For this section you will need to make your way to the cockpit: to do so move forward, down the stairs and circle around the fire to the left.
Climb the far set of stairs and exit on to the command deck. Move all the way to the far side of the room and up the hallway here into the cockpit for another conversation and a scene that sets up the rest of the game.
Missing in Action
Save your crew from an overwhelming attack