Lawrence and the governor seek Margaret's help with a personal legal matter related to the governor's sister.
Clark is concerned about Lois' safety when she decides to cover the Vigilante Registrations Act.
Darius and Grace's relationship is tested; President Mackenzie tries to unite the fractured country; the hacktivist group ReSyst issues a deadly edict.
Darius vows revenge on the hacktivist group ReSyst, no matter what the cost; Harris discovers a dark secret and Grace reveals one of her own.
An MIT grad student discovers that an asteroid is just weeks away from colliding with Earth.