Percy (Xander Berkeley) and Michael (Shane West) take their latest assignment, a Slavic leader wanted for war crimes, into protective custody. Nikita (Maggie Q) learns of their hideout and attempts to thwart their plan, but a mysterious group of mercenaries in search of nuclear material beats her to the task. Alex (Lyndsy Fonseca) is activated earlier than expected for a special assignment that throws her into the crossfire of bullets. A flashback reveals a pivotal moment in Nikita's life.