I wasn't pulled to see the movie from its trailer or synopsis, nor, from what others said. However, when my son's friends (age 16 and 17) and Americans, told him that they saw it and they loved it, it raised my curiosity. Because if a Foreign movie appeals to American teens, then something was done right.
Thus, I saw it, and it was a great movie, to my surprise, because I thought it will be just another Indian Movie with lots of unexpected dancing and tons of misunderstanding, etc. However, it was more real, very creative directing that it took us to three different time frames, giving us the past, the present and a glimpse of the future of the character. And great actors of all the ages.