The highest and most technologically sophisticated skyscraper in the world, called by its inhabitants a vertical city, is the subject of widespread fire. Former FBI agent Wil Soyer, who is now dealing with high-rise security issues and has come to China to assess security in this skyscraper, is blamed for the incident. Vilas has no way out - neither of the situation nor of the building. He must find the perpetrators and rescue his family, who are threatened by the flames that are approaching. Every second matters and he can only trust his own strength and knowledge.