A year before the infamous Watergate break-in, E. Howard Hunt and G. Gordon Liddy are tasked with investigating the Pentagon Papers leak, gathering a team of Cubans - all Bay of Pigs veterans - to infiltrate whistleblower Daniel Ellsberg's psychiatrist's office. Meanwhile, Hunt and his wife Dorothy get to know the Liddys.

While Hunt and Dorothy entertain Liddy and his wife Fran at their exclusive country club, their kids Lisa and Saint John paint a less-than-perfect portrait of the family. Later, on the outs with Nixon's Attorney General John Mitchell, Hunt and Liddy get a chance to redeem themselves when a leaked memo from Dita Beard puts Mitchell and the administration in legal jeopardy.

Hunt, Liddy, and the Cubans attempt to break into the DNC offices at the Watergate to plant listening devices for the White House.

Reeling from the arrests at the Watergate, Hunt enlists Saint John's help to dispose of evidence, while Liddy warns the acting Attorney General that the burglaries can be tied back to President. Later, after returning from Paris, a livid Dorothy must take control to protect her family and the Liddys.

Amid rumors of the White House's involvement, Liddy shares his concerns about Hunt's stability with John Dean and tries to make a deal. After Liddy, Hunt, and their accomplices are found guilty, Hunt's daughter Kevan leverages a secret notebook to convince her father to come clean in his Senate testimony, but it may be too late. When the President resigns, lives are ruined.