Team Scorpion must prevent an incoming tsunami from hitting a vulnerable nuclear power facility; Toby secretly helps his ex-fiancee retrieve her stolen identity.
Spread out and separated across the country, the Mad Dogs must weigh their personal desires against those of their friends' lives in order to recover all of the missing money and save a kidnapped Joel.
Dubaku's diabolical plans intensify, but the First Lady stands her ground. Meanwhile, Jack takes control when a terror threat builds momentum.
The First Lady's foreign policy dilemma deepens when Dubaku's plans escalate. Meanwhile, Jack's determination to expose conspirators has critical consequences.
Wearing a blood-soaked wedding gown and carrying a pair of scissors, Alan's former lover (Megan Mullally) proclaims her innocence in the murder of her betrothed.