Elizabeth is attending a summit in Montreal to resolve territorial claims of the North Pole when an activist group detonates a bomb and she can't locate Jason and Piper. Also, things take a turn for the worse when Elizabeth learns that Russia was involved in the bombing, and Henry helps one of his students work through a difficult decision.

When terrorists threaten to cause a flood in the Middle East that could kill millions of people, Elizabeth's hopes of getting a neighboring country to close the dam fade after the government suddenly goes dark during a coup. Also, Stevie is tasked with finding Russell an activity that will help manage his stress.