Although Karan Johar produced film Badrinath Ki Dulhania has not released yet but this passionate filmmaker is not going to silent soon. Karan Johar has started work on Dharma Production's next film Dragon and for the script sitting Ranbir Kapoor and Amitabh Bachchan reached to Dharma's office. Let me tell you that Ranbir Kapoor and Amitabh Bachchan are playing leading roles in Ayan Mukerji's Dargon. Although there is some time to start the shooting of the film but for the first time, Ranbir Kapoor and Amitabh Bachchan came to Dharma's new office for script sitting. According to the sources, Karan Johar was very happy on this occasion, people see that he was showing the every corner of his new office to Amitabh Bachchan and Ranbir Kapoor because there are many pictures are of Amitabh Bachchan films like Agneepath, Kabhi Khushi Kabhie Gham, and Kabhi Alvida Naa Kehna. This became the reason that first Amitabh recalls his memories of old movies. This is being told that Karan got so emotional while showing the special pictures of his father to Amitabh and Ranbir. Actually, Karan from long wanted to show the new office to Amitabh Bachchan but the time was not getting right for it. According to the sources, Karan Johar's student and Badri, Varun Dhawan was also in the office that time as he saw Amitabh, he rushed towards him and took blessing from him by touching his feets. Now the presence of Ranbir and Amitabh has confirmed that the preparation of Dragon has been started.