National Treasure: Book of Secrets

In 1865, the Civil War comes to a definitive close, marking a pivotal moment in American history. This era of conflict concludes with numerous implications for the nation and its citizens, setting the stage for the events that follow.

Thomas Gates and his son Charles encounter notorious figures John Wilkes Booth and Michael O'Laughlen, connected to the clandestine group, the Knights of the Golden Circle. This fateful meeting leads Thomas into a world of secrets and assassination plots.

Thomas is enlisted to decode a Playfair cipher found in Booth's diary. As he works on this complex puzzle, O'Laughlen remains by his side, unaware of the imminent chaos that will soon unfold.

While Thomas deciphers the message, Booth leaves to execute his infamous plan to assassinate President Abraham Lincoln. This tragic event sends shockwaves through the nation and alters the course of history.

After deciphering the cipher, Thomas discovers it reveals a route to Cíbola, the mythical City of Gold. This revelation adds urgency to the situation as tensions rise following Lincoln’s assassination.

Sensing danger and betrayal from Booth and O'Laughlen, Thomas tears up the diary and throws the pages into the fire. O'Laughlen tries to thwart him but narrowly escapes with a fragment of the page, intensifying the stakes.

Fast forward 140 years, Benjamin Gates recounts his ancestor's tale at a Civilian Heroes conference. His story reignites interest in the mysteries surrounding Booth and Lincoln's assassination.

During the conference, Mitch Wilkinson, a black-market dealer, interrupts and reveals he possesses a page from Booth's diary, igniting a treasure hunt that connects to Benjamin's ancestor. This discovery propels Ben on a quest to decode the cipher.

Ben and his friends uncover a secret tied to the Laboulaye Lady, directing them to a hidden message on a scale model of the Statue of Liberty in Paris. This critical clue is linked to Thomas's last words, prompting a race against time.

The message leads Ben's team to two Resolute desks, one in Buckingham Palace and the other in the Oval Office. These artifacts hold the key to further unraveling the mystery connected to Cíbola.

Unbeknownst to Ben, Mitch is shadowing him, using a cloned phone belonging to Ben's father to intercept communications. This betrayal sets up a game of cat and mouse as they navigate through various clues.

Ben orchestrates the President’s birthday celebration at Mount Vernon, managing to trap him in a hidden tunnel. This meeting leads to the revelation of the Book of Secrets, which holds vast historical truths.

In a thrilling confrontation at Mount Rushmore, Ben and his team find Cibola's hidden site but trigger danger when a water surge threatens their escape. This moment challenges their survival and determination.

After their harrowing adventure, Ben and his team emerge to find themselves vindicated by the President, who reveals that Cibola has been discovered. They receive credit for this monumental find, highlighting their heroism.

The film concludes with a new mystery as the President seeks Ben's help to decipher an enigmatic Page 47. This leaves the door open for future adventures, showcasing the ongoing allure of historical enigmas.