This was an extremely poor movie. The weakest character during the TV series, River Tam, confusingly became the story focus in this movie.
Despite never exercising and having a small frame, River fought and K.O.ed a room full of bar patrons.
The crew, mysteriously, were devoted to going to the planet River wanted to visit to help her discover her past despite showing various degrees of hostility toward her during the series ranging from open contempt to advocating her murder.
The main villains do not make sense. They are, supposedly, so wild that they regularly sack planets and canniba... read the rest.