Bollywood and international star Om Puri will be seen on screen playing freedom fighter Bal Gangadhar Tilak in the film titled `Chapekar Brothers`. Om is researching on the internet to study and understand several facets of the late freedom fighter. The Hindi film will present the glorious journey of `Chapekar Brothers` who contributed to the freedom struggle in 1897. Directed by Milann Ajmera, written by Dhiraj Mishra and produced by Ghanshyam Patel of Giriva Productions, the film`s shooting has already begun in Vadodara, Gujarat.