Ranbir and Katrina pair itself are interesting. They have already impressed the movie lovers with their on-screen chemistry in the past. The 2:44-minute-long trailer showcases a montage of videos where Ranbir and Katrina behave strange and weird. There are no dialogues in the trailer . Instead there is a good background score in the film. Anurag Basu is coming out with another interesting subject in the form of Jagga Jasoos. Though the concept was not revealed in the trailer, it raises some curiosity.