Concept was good. Was bit boring at the start. But there are questions that are unanswered like who made those weird phone calls, how the hell he learnt such kind of martial arts even after being dormant for so long, how the hell was he climbing walls, why were the lights fluctuating when he became dominant, how the hell was he dodging the police's bullets and how the hell did he killed everyone in the police precinct. One time show. If you are practical don't watch it. If you are not much of a logic person then go for this movie.