But just when you start to get impatient with the plodding , one-thing-after-another style of narration , there 's a shocker that blows you into the movie 's last act , and then a scene in which a couple of former antagonists figure out what stinks and join forces in an abandoned motel to stave off an army of bad guys .
At the end of the movie , the former antagonists band together to fight a common enemy .