Sameer Khanate (Mashhoor Amrohi), a con man in Singapore works as a 'Recovery Agent' for Gary Rosario (Jackie Shroff), an underground racketeer of night clubs.
When Sameer's brother is in need of money and Gary refuses to help him out, Sameer is left with no other option but to kidnap the daughter of a multimillionaire actor, Gyaneshwar Singh (Shehzad Khan) and use the ransom to help his brother.
However, he soon falls in love with Gyaneshwar Singh's daughter Esha's (Vishakha Singh) and promises her a great life ahead. Esha also agrees to elope with Sameer.
Gyaneshwar Singh comes to know that Esha has been kidnapped and he joins all forces to recover her.
Further complications arise when Sameer gets involved in a drug deal, and in the process loses Esha to a gang of drug lords Dabar (Mukesh Rishi) and Pran Panwara (Kiran Kumar). Sameer’s true identity is also revealed to Esha. How Sameer salvages the situations and wins Esha’s heart is what the movie Hum Sey Hai Jahaan is all about.