Main Hoon Na is a Bollywood action-comedy film directed by Farah Khan. The movie stars Shah Rukh Khan as army major Ram Prasad Sharma, who is sent on a mission to protect General Bakshi's daughter Sanjana (played by Amrita Rao) from a militant group led by Raghavan (played by Sunil Shetty).
Ram Prasad Sharma goes undercover as a college student to keep an eye on Sanjana, who is unaware of his real identity. He then falls in love with a fellow student named Chandni (played by Sushmita Sen), who also happens to be the college professor's sister.
Meanwhile, Ram Prasad's personal mission is to find his half-brother Lakshman (played by Zayed Khan), who is unaware of his relationship with Ram Prasad. Lakshman is studying at the same college, and Ram Prasad tries to re-establish his relationship with him while also dealing with the militant threat.
As the story unfolds, Ram Prasad and his team successfully thwart the militant group's plans, and he also reconciles with his long-lost brother. The movie is a perfect blend of action, comedy, and romance, and has become a fan favorite since its release in 2004.