Vanguard of Vengeance

When an unexpected delay prevents Shepard from reaching the Prothean beacon on Eden Prime in time, she makes a discovery that will throw the course of future history into disarray. Now, on the brink of a galactic extinction event, can Shepard defeat old enemies with a new host of allies? Can she turn the tide of darkness, or will she succumb to it. Find out in Vanguard of Vengeance