Plot summary
Nikita follows Tasarov to the Udinov estate to take back the black box, only to encounter Alex. They decide to work together to help Katya escape. However in the process, Alex is captured by Semak. As Nikita comes to rescue both Alex and Katya, she learns that it was Katya who alerted Semak of Alex's presence, as he made her believe Alex was turned by Division. It is also revealed that Katya survived because she and Semak had an affair. After failing to retrieve Katya, Nikita and Alex escape the estate.
Meanwhile, Amanda places Ryan in Percy's cell, so the two of them can figure out how to take down Oversight, which is also Amanda's goal. Michael and Owen follow the guardians to Amsterdam. After killing one of them, they are made aware of their meeting place. Michael infiltrates the meeting by posing as the dead guardian, after which he uses the opportunity to destroy the black boxes before escaping with Owen. Later, they deduce that Percy is using the guardians to break him out of holding.
Credits
Adapted from Wikipedia contributors, Nikita season 2. HTML formatting and reference markers removed.