Help! We're trapped in a Fanfiction

Albus, Rose, Lily, Fred and Molly meet a strange girl on the Hogwarts Express, from then on, everything goes wrong. With a little Ravenclaw studying and Gryffindor courage, they find they are in a FANFICTION! How will they ever escape the weird land of Mary-Sue's, terribly awful descriptions and OoC Characters appearing at any time? Fun thing, not serious but reviews appreciated!