Benjamin Gates, the great-great-grandson of Thomas Gates, tries to clear his ancestor's name in the assassination of Abraham Lincoln by following a clue in John Wilkes Booth's diary. With the help of his team and a book of secrets, they embark on a globetrotting adventure to find the hidden City of Gold and unravel the conspiracy surrounding the assassination.

A historian named Benjamin Gates embarks on a mission to find the famous Templar Treasure. With the clue given by his grandfather, Ben sets out to locate the national treasure hidden by the Founding Fathers of the United States and Freemasons during the American Revolutionary War. He must outsmart a team of mercenaries led by Ian Howe who are also after the treasure. Alongside his friend Riley and Dr. Abigail Chase, Ben deciphers ancient clues and navigates through dangerous obstacles to protect the family name and ultimately uncover the hidden treasure.