Plot:
Mark Felt is the former deputy director of the FBI. During the Watergate scandal, the biggest political scandal in the United States in the 20th century, he disclosed information that was unfavorable to President Nixon to a reporter from the Washington Post, which led to Nixon's resignation. At that time, he did not reveal his identity, but used the title of a popular pornographic movie as his code name, which was "Deep Throat". It was not until 2005 that Mark Felt admitted that he was "Deep Throat".