Rajvir Singh, a young athlete, dreams of winning a gold medal, but tragedies always prevent him from achieving his goal. After losing his hearing due to an accident, he gets admission to an athlete academy where he betrays by angad.

Stray, poor, idle, addicted common people can be found easily around us. The politicians and system treat them as puppets. Such people are not considered as human beings. Most of their questions can't be solved but they themselves are a big question for society. These "unimportant" people either get trapped or become revolutionary for the society. Revolutionary people serve as the flag of humanity, the colors of which cause irritation in other's eyes. Posti is the story of the irritation caused by these revolutionary colors. Why it happened in the past, happening now and how long will it continue?

Three friends Pargat, Goldy, and Jeeta who all are involved in illegal activities. Their lives take a gripping turn when they kill the accomplice of Balbir, a well-known man of Chandigarh, who is now after them.