The story of " The Lost Girl" is based on the sikh riots that occurred in Delhi in 184, impacting the lives of thousands who has to be relocated from one place to another. the film revolves around a 5-year-old girl named Suhani, who gets separated from her family during the riots and finds herself in an unfamiliar and dangerous place, nearly 100 kilometers away from her home. Suhani spends 15 years with a unknown family, studying and growing up, but gradually memories of her past start haunting her. The terrifying events of the riots become vivid in her mind. Frustrated and disturbed, on day she decided to escape from there. The story depicts how a 5-year-old girl survives in and unknown place from 15 years and whether she succeeds in finding her real parents. She herself doesn't know who her real parents are and where she came from.