Professor R. J. Lupin and the Time Machine

When Dr. Remus Lupin isn't in the classroom teaching the next generation of curious minds, he's toiling away in his lab, trying to cure an impossible disease. That was, until he fell in love. Now, Remus wants to make up for lost time and spend every waking moment cherishing his sweetheart.

But fate has other plans.

When his love story ends in tragedy, Remus loses himself to a new project – building a machine that will allow him to change the past and get his happy ending. He never expected his search for answers would send him 800,000 years into the future.