It's Roxy's first Halloween in serenity falls and it looks like it's going to be a bust until Roxy discovers that her classmate Stefan is actually a vampire from Transylvania...or so she thinks. The truth she comes to find is actually much darker.

Matt, a 19-year-old student, goes to the hospital to see his newborn son. He learns his girlfriend plans to put the baby up for adoption without his consent, so he takes his son to his grandmother's house to fight for custody.

A scientific experiment in rapid-cell growth goes awry when a lab assistant steals the developed serum and injects it into his pregnant girl friend. The result is a child that grows through adulthood and will die within days, if a cure cannot be found.

After moving to an eerie old house in the country, nine-year-old super sleuth Roxy Hunter stumbles into a world filled with unsolved mysterieus, secret plots and spooky spirits! Now, Roxy and her best friend and boy genius Max, must race to save their home, re-unite a lost love and uncover the true villain. Is it the Moody Ghost...or something even spookier?