Shahrukh Khan now plays Major Ram Prasad Sharma, an army guy posing as a student in close buddy and choregrapher-turned-filmmaker Farah Khan's directorial debut, Main Hoon Na.

Major Ram Prasad Sharma is the son of a fearless Brigadier Shekhar Sharma (Naseeruddin Shah) who lived for his country and died for the same cause. Major Ram is assigned on a mission called Mission Milap that will bridge the two nations that were the result of the biggest partition in history wipe the enemy lines and become friends. But Raghavan (Suniel Shetty) will not let that happen at any cost to make this end meet he has set his eyes on Major Amarjit Bakshi's young and reckless teenage daughter Sanjana (Amrita Rao). Undercover soldier Major Ram begins his school once again his secret is best guarded by the Principal (Bomen Irani) of St. Paul's school.

He has interesting encounters with cool dude Lucky Laxman (Zayed Khan); Sanjana, the tomboy (Amrita Rao); physics professor Raghavan (Suniel Shetty) and the forgetful school principal (Boman Irani). While coping with his new life in school, Sharma finds love in his teacher Chandni (Sushmita Sen).

Co-produced by Shahrukh Khan's wife Gauri, and Venus' Ratan Jain, Main Hoon Na is scheduled for an April 30 release.