While Mag, Zone, and Griff fight to survive the LA apocalypse without killing each other, Trevor and Alpha must take the fight straight to the Rossum Corporation, which started it all. In order to destroy Rossum, they must find Echo--the only person uniquely equipped to destroy the evil corporation from the inside.

* Marks the top secret return of a fan-favorite character!

* Continuing Joss Whedon's cult-hit TV series