It was July 18th of 1969, the day where Kennedy's family vanished their last opportunity to reach the presidency. This is the day where the Chappaquiddick scandal happened.

Ted Kennedy (Jason Clarke) is attending to a party with his cousin Joe Gargan (Ed Helms) and US Attorney for Massachusetts Paul Markham (Jim Gaffigan) there he is having drinks with Mary Jo Kopechne ( Kate Mara) and together they leave the party, Ted Kennedy accidentally drives off the Dike Bridge into a pond. He is able to scape, but he is unable to rescue Mary Jo, he flees the scene, reporting the incident 9 hours later, filled with contradictions.

The whole family works their way to manipulate information and clean Ted's reputation from this incident, Robert McNamara (Clancy Brown) United States Secretary of Defense leads the team to do damage control, also Ted's turbulent relationship with his Joseph Kennedy (Bruce Dern) who believes he son is a disgrace for him.

Chappaquiddick tells the story of the last hope for the Kennedys family to reach the presidency. From a whole catalog of movies and TV miniseries like JFK, Bobby, The Kennedy's, Killing Kennedy, Jackie and 13 days, this movie gives you a glimpse of how the Kennedy family is surrounded by mysteries and intrigues where John and Robert were brutally murdered in 1963 and 1968, also their time in Washington is connected to conflicts with Rusia, Cuba, the mafia and teamsters. In this film, we see a very vulnerable Ted manipulated by his family and controlled by his dad helpers. The conclusion of Chappaquiddick is a message of sanity and honesty from a man who is been pressure by the shadows of his brothers but doesn't make him a hero, because we will never know what happened on July 18th, 1969.