Harry Potter, Fred and Hermione Marriage Law. Set post-Hogwarts in the year 2000. Would love to hear your comments

There are no strangers here; only friend's you haven't met. An unknown man sends Hermione back to the Marauder's Era as revenge, however, the consequences are far more disastrous than what even he imagines, when Hermione loses her memory of the past. Why did that man do this to her, and what secrets will be spilled? Who is the guilty party?