XIII, Betty, and Barnabos set out to stop the Chinese HEARPE weapon from going online while back in the states the control of the country is still being fought over by a crazy man and a traitorous bitch. God Bless America?
The second-half of this season (including the low point of the underground Chinese Fight Club) has been very much hit-or-miss. Battlezone isn't a great season finale, and has its own problems with another virtual reality sequence and logic about HEARPE and both XIII and Victor Gong's relationship to it that don't make much sense. Thankfully, most of the trouble storylines are wrapped up, although we only see the virtual death of Victor, and Betty lives on to over-complicate things for the foreseeable future (if it returns for a third season).
You can find my full recap and review (with pics) at RazorFine Review