SECRET SUPERSTAR narrates the story of an aspiring singer who faces roadblocks in fulfilling her dream. Insia [Zaira Wasim] is a school-going girl based in Vadodara. She has a lovely voice and dreams of being a top singer. Her mother Najma [Meher Vij] supports Insia’s dream, but her father Farookh [Raj Arjun] is thoroughly against the idea due to his conservative mindset. He tries everything – from force to destroying Insia’s guitar – to stop her from fulfilling her dreams. She, however, remains adamant.
Insia takes to the internet and posts videos of her singing. Wearing a burkha, she makes sure only her eyes are visible in order to keep her identity concealed. She’s taken by surprise when her videos go viral. Enter Shakti Kumar [Aamir Khan], a brash, lecherous but successful music composer. Insia gets a chance to meet Shakti. What happens next forms the rest of the story.