Enthiran (Tamil: எந்திரன்) is a forthcoming Tamil science fiction film co-written and directed by S. Shankar. The film features Rajinikanth and Aishwarya Rai in the lead roles with A. R. Rahman working on background score and soundtrack. Produced by Kalanidhi Maran, it is known for being the most expensive Asian film ever made. It is also slated to make the largest worldwide opening for an Indian film, upon release