Charlie, a simpleton daydreamer, currently a pizza delivery boy is tasked with driving his uncle’s truck , Girnaar Express, to deliver a gorilla from Mumbai to the jetty at Diu. However, Charlie is unaware that Gorilla is disguised business tycoon MD Makwana, who is on the run after committing a multi-crore scam.

A riveting tale of undertrials who are brought together to form a band in jail for a social event. As their popularity grows through social media, they use their music to protest against jail authorities & the Indian judicial system. Eventually, when all hope fades, music becomes their only hope but will it set them free?