Dawn is a city in a disused factory in China, a special operations unit of armed police captain Yang Zhi to lead the SWAT team is performing an urgent task, to rescue the criminals hijacked a demolition expert Professor Wang Hui. With the outlaws desperate struggle, finally succeeded in rescuing the professor Wang Hui, at the same time that, which is superior to test special police team in the new situation, new deal with emergencies and anti terrorism combat power and environment organized a field exercise. Become frenzied criminals hijacked buses dozens of passengers as hostages.