The episode starts 10 months after the events in "Original Sin" and circumstances have changed for the main characters (for some more than for others). Two of them are pretty different from the last time we saw them, and the team might be missing a member or two. Or more.

While investigating a string of crimes, the team realizes that they are looking for Nina, who had gone AWOL, and try to stop her before she hurts herself.

Hicks turns defector and begins working for Parish; the team uncovers a plot to cause a massive, deadly blackout.

Rosen seeks a final confrontation with Alpha leader Stanton Parish.