Last week, Nikita (Maggie Q) and Alex (Lyndsy Fonseca) took on a mission that gave them some much-needed closure. In tonight's episode, a mission to stop a bombing makes both women question what they believe in.
Ryan (Noah Bean) hears from Mia, a Division agent who has been undercover for a year. Mia has information on an upcoming attack, but gets arrested by the FBI before she can go into detail. Ryan figures out the basics of said attack on his own, while Nikita and Alex try to extract Mia from a federal prison.
Unfortunately, it turns out that Mia has turned against Division and she shoots Alex during her escape. Meanwhile, Michael (Shane West) and Sean (Dillon Casey) realize the group Mia works with, Third Wave, is targeting a gathering for returning soldiers and their families.