Rajdhani Express is the story of Keshav, an errand boy for a gunrunner. On one errand Keshav steals the weapons and books a ticket on the Rajdhani Express from Delhi to Mumbai to escape. However, his fate follows him through his escape onto the train in the form of Yadav, the Deputy Commissioner of ATS. While trying to apprehend Keshav, Yadav manages to extract political mileage from the situation weaving a web, endangering not only Keshav, but also his co-passengers. However, The Commissioners has his ulterior motive to get even with his boss, the Minister of Home Affairs, whose parents also happens to be on the train. Distanced, ridiculed and humiliated, he reacts by pointing his gun at them. All hell breaks loose. Can Keshav escape the trap? If so, how?