The Escalation Pack for Call of Duty: Black Ops hit the Xbox 360 today and with it comes Call of the Dead, a star-studded zombie expansion that features it's own story and a new backdrop.

Here's a look at how the game opens up and a surprise explanation of the back story by director turned head zombie George Romero.

Be warned, this video shows the entire opening of the Call of the Dead expansion pack and the video you're treated to when you finally give up.