On a hot summer day in Guangzhou, people from different industries are busy managing their own lives in the towering skyscrapers. The fire protection system company opened by Aqiang (played by Louis Koo), who once served in the fire brigade, opened today. In the clinic on another floor, Sile (played by Angelica Lee), the wife of Dajun (played by Andy Lau), the captain of the fire special service team, is doing a pre-pregnancy check. At the same time, there was a problem with the air conditioning system of the building, and the maintenance personnel with poor prevention awareness caused an uncontrollable fire. The experienced Aqiang quickly organized the evacuation, but the fire quickly spread to all floors, and the safety of the affected people was greatly threatened. After receiving the alarm, Dajun led his comrades to the scene quickly. The unprecedented disaster reconnected Dajun and Aqiang, a pair of brothers who had been estranged for many years. In critical moments, human life and humanity are undergoing the most severe test...