This new piece of single player DLC expands upon the events of Mass Effect 3 by allowing players to return to the seedy and unsavory levels of Omega to fight alongside fan favorite Aria T'Loak. This new chapter in Commander Shepard's journey will also add powerful weapons and introduce never-before-seen characters to the franchise.

Cerberus agent Oleg Petrovsky and his squadron have seized the infamous black market trade post known as Omega. As its self-proclaimed rightful leader, the legendary biotic Aria T'Loak plots her revenge to reclaim her domain by teaming up with Commander Shepard and another mysterious ally. They must put aside their differences and fight side-by-side to defeat the Illusive Man's reign over the space station and free the enslaved people of Omega. In addition to the new story content, Mass Effect 3: Omega also includes two bonus weapons, the N7 Valkyrie Assault Rifle and Chakram Launcher, previously only available through pre-order promotions.