Vijay Krishna Acharya a.k.a. Victor is all set to take down the industry with the fourth installment of the Dhoom franchise. This time, the cast gets even spicier. Apparently, Hrithik Roshan will play the main antagonist again, as he had done in Dhoom 2, while Amitabh Bachchan joins the franchise for the first time. Interestingly, Junior Bachchan Abhishek, is already an integral part of the Dhoom franchise. Whether Big B will have occasions for face-offs in the plot with his son, is not known at the moment. Says a reliable source, “At the moment, it is not very clear where Victor is going with this. All that is confirmed is that Aditya Chopra and Victor have approached and signed Bachchan Saab and Hrithik Roshan.” Amitabh Bachchan and Hrithik Roshan have earlier been together in Farhan Akhtar’s Lakshya, though they did not have many scenes together. It is being said that this time around, much of the dramatic conflict in Dhoom 4 will centre on the two actors.