The movie is about a police officer played by Aamir Khan, who is trying to investigate and solve what seems like a perfect crime, and all suspects in the film are going to be seen together in that one single music video.
The promotional video has Aamir Khan, Kareena Kapoor, Rani Mukherji, Nawazzudin (from Gangs of Wasseypur) and all principal cast of the film in one single frame making it a never seen before visual.

If things go as per plan, Shahrukh might be romancing Kajol, Anushka Sharma & Rani Mukerji in Chennai Express .
“The storyline requires three more female actors besides Deepika to play SRK’s girlfriends in special appearances. So they have decided to rope in Kajol, Anushka and Rani, since they have already worked with him in the past. It will help build excitement about the film,” says an insider.

Rani in her Sridevi Avatar, She looks adorable, and I love Prithviraj's eyes.. they're very expressive ! what do you guys think ?

Ever since Kahaani released, people have been predicting that Vidya Balan will win all the Best Actress
Awards next year. And why not? So far she's the only worthy candidate. However this might change in the coming months because the best is yet to come.
Kareena Kapoor:
Heroine - One of the most anticipated films of the year.
Talaash - Another performance oriented role however we're still not sure whether she's playing the lead or supporting role in the film.