This is a bit of a mess. It starts out as one kind of movie, then slowly drifts into being a different kind of movie, and it never really connects.
Dave is a policeman who, despite 17 years on the force, seems singularly ill-suited to the job. Emotionally stunted, he's been demoted to manning the police kiosk in a hospital. One night Hon, also known as "Demon King" and the leader of a cult of bank robbers, stumbles into the…