Timmy's shot at the perfect attendance award at school is threatened by a pounding from Francis. Timmy wishes to become invisible and soon wreaks invisible havoc everywhere, causing everyone to believe that the school is haunted. Everyone that is, except Crocker who knows that catching the invisible Timmy will be all the evidence he needs to prove the existence of Fairies. / Timmy and his folks are off to Adrena-Land, as Timmy's now old enough to go on all the cool rides. But it's also Friday the 13th and the "anti-fairies" are making sure that nobody has a good time, spreading as much bad luck as they can.