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.

Tension rises between Francis and Raymond Tusk as the situation with China deteriorates. A battle in the Senate pits Francis against the Republicans.

A terror scare at the Capitol traps Francis with a resentful Donald Blythe. Claire gives a live interview that rocks the media.

Francis back-channels with a Chinese billionaire. Lucas uses extreme measures to expose the Vice President. A shadowy figure joins Team Underwood.

Amidst an energy crisis, Francis and Tusk end their shaky alliance. Lucas must make a difficult choice. Stamper grows closer to Rachel.

Despite some friction, the Walkers deepen their friendship with the Underwoods. But it's all-out war between Francis and Tusk.

The war with Tusk intensifies. Claire influences Tricia Walker politically and domestically. Francis has a show-down with Linda Vasquez.

Things get personal when Tusk blindsides the Underwoods with a scandal. Freddy and his BBQ joint get caught up in the mix.

With a military stand-off overseas and potential violence at home, Francis wants to finish off Tusk for good. Claire and Jackie Sharp collide.

A Special Prosecutor interrogates Francis. Remy Danton tries to keep his options open. Stamper wrestles with his demons.

Francis finds himself shut out and Claire makes a difficult sacrifice. Stamper tries to regain control.

Francis faces annihilation while the nation is in an uproar. Stamper must tie up loose ends. Claire feels the cost of ruthlessness.

A rocky start for the Underwood Presidency. Frank wants to introduce an ambitious jobs program, while Claire sets her sights on the United Nations.

Claire's U.N. bid runs into trouble. Frank fights off mutiny with a bold address to the country.

The Russian president's state visit becomes a cold war of wills, and some punks heat things up.

Claire bypasses Russia at the U.N. Frank tries to outmaneuver a potential challenger and ends up face to face with a higher power.

Frank declares war on Congress to jump-start his jobs program. Claire spars with the Russian Ambassador.

Frank and Claire travel to Moscow to negotiate the return of an imprisoned U.S. citizen. Claire takes a stand that jeopardizes their plans.

The damage is done and the Underwoods must repair it. But deep wounds don't heal fast, and sometimes not at all.

A hurricane endangers more than just the entire East Coast and Frank must make a difficult choice.

The Jordan Valley erupts in chaos as Frank's campaign is picking up steam. Claire gets distrubing intel and counsels him.

Frank needs to deal with Petrov one on one while Claire tries to preserve the peace-keeping mission. Sacrifices must be made.

Things turn ugly when Frank, Jackie, and Heather square off during their first debate. Tom joins Claire on the campaign trail.

Heather Dunbar goes for the jugular, forcing Claire to confront her worst fears. The rift between Frank and Claire widens.

In the midst of the Iowa caucuses, Frank and Claire must confront hard truths about each other.