The Underwoods tackle two threats that could bring their plans to ruin. Francis grooms his replacement as Whip. Claire goes on the offensive.

Amid turmoil in the home, Frank takes office. Foreign relations become entangled as Durant's team bungles a meeting. As foes negotiate to thwart her, Jackie maneuvers to strengthen her position. Lucas acquires new skills in order to pursue his secret investigation.

As Claire begins exploring a campaign of her own, she and Frank engage in backdoor political maneuvering. But this time they're not on the same side.

Frank and Claire adjust to their new reality. The search for Frank's running mate begins. Frank starts a campaign to weaken Conway's strong support.

Formidable as ever, both Underwoods have their eyes on the big picture as they manipulate a potential running mate and push the gun bill.

With a tight race and low voter turnout on Election Day, things look grim for Frank. But he's still got one more trick up his sleeve.

In the midst of uncertainty, suspected Russian forces take over an American station in Antarctica. Meanwhile, a damaging news leak could hurt Frank.

As the team tries to control fallout from damaging testimony and leaks, everyone is under suspicion and tensions flare between Frank and Claire.