One of the Youtube users has published the new Destiny trailer, which shows the opening cinematic scene of the shooter's upcoming DLC - The Dark Below. According to the author, this footage has opened to him by an error while he was playing the game. The video is narrated by a female character - Eris - who will play a key role in the future expansion. She tells about the powerful king of a Hive - Crota - who has vanished a lot of Guardians. You can find more information about the first Destiny add-on by this link.
