Guddu Ki Gun is the tale of Govardhan aka Guddu (Kunal Kemmu), a Bihari settled in Kolkata. He is a door-to-door washing powder salesman, whose sales pitch is "Ek washing powder ke saath Guddu free". While sharing a room with his close friend Ladoo (Sumeet Vyas), Guddu leads an amorous lifestyle in Kolkata. His travails begins when he ditches one of his girlfriends, Bholi (Aparna Sharma). Furious for forsaking his granddaughter, Bholi's grandfather casts a black magic spell on him. The only way Guddu can get rid of the curse is to find true love and by staying faithful to her.
An extremely wealthy elderly man dying from cancer undergoes a radical medical procedure that transfers his consciousness to the body of a healthy young man but everything may not be as good as it seems when he starts to uncover the mystery of the body's origins and the secret organization that will kill to keep its secrets.
A dramatic thriller based on the incredible true David vs. Goliath story of American immigrant Dr. Bennet Omalu, the brilliant forensic neuropathologist who made the first discovery of CTE, a football-related brain trauma, in a pro player and fought for the truth to be known.