"City 21" explores several themes that are relevant to contemporary Pakistan and the world at large. The film critiques the dangers of a surveillance state, where citizens' every move is tracked and monitored. It also touches on issues of government control, propaganda, and the erosion of civil liberties.

As Ray digs deeper, he discovers that the government is hiding a sinister plot to manipulate and control the population using advanced technology. With the help of a group of rebels, Ray must navigate the treacherous landscape of City 21 and expose the truth before it's too late.

The film's score, composed by Ali Hamza and Zohaib Kazi, adds to the overall tension and excitement of the movie.

The film's production values are impressive, with a blend of practical and visual effects that bring the futuristic city to life. The cinematography is sleek and polished, capturing the sleek skyscrapers, neon-lit streets, and underground rebellion hideouts.