This story is set when the Golden Trio are in their seventh year and Hermione is 18 years old. After the Wizarding War in which Voldemort is finally defeated and Dumbledore is somehow alive, the old wise Wizard leads Hermione to a strange book within the library through a cryptic hint. After trying to read the book, which Hermione is unable to comprehend, she somehow finds herself in another place entirely. Upon discovering that she had somehow been sent back in time, Hermione is faced with a number of trials, one of which she is mistaken as the Governor's youngest daughter. As she tries to convince those around her that she is not the Governor's daughter, she is believed to have amnesia and she decides to play along if only for the time being because no one seems willing to believe her anyway. When the town is suddenly attacked by Pirates, Hermione finds herself being pulled into an adventure full of danger, piracy, treasure, death, and, eventually, love.
Author's Note: Here is my Pirates of the Caribbean/Harry Potter crossover from fanfiction.net.