Javed (Jackie Shroff) and Ajay (Shahrukh Khan) are members of a special task force that combats drug trafficking. Their main target is a notorious drug lord called KKV (Nirmal Pandey). After a tense encounter, they do succeed in arresting him, but KKV, with his powerful connections manages to get acquitted in court.

Javed's entire life revolves around his four motherless children. But Ajay, who otherwise Javed regards as a younger brother, just cant stand the kids! The kids too dislike him and make him the target of their naughty pranks.

Into this idyllic existence, comes a dastardly ambush; a sudden and cruel burst of gunfire that kills Javed. Ajay is devastated. He decides that from now on he will look after Javed's orphaned children. But the children hate him and refuse to have anything to do with him. He enlists the help of his old roommate Champak (Dilip Joshi), but that too does not work. In sheer desperation, he turns to Geeta (Juhi Chawla) a loud and talkative rustic girl whom Javed had befriended. Geeta comes home with Ajay and wins over the children. Slowly but surely, she manages to capture the heart of the stubborn and hot headed Ajay, as well.

And then, one day, as he tails KKV to a nightclub, Ajay sees him dancing with a stunningly sexy woman. Its Geeta!

Shocked out of his wits, he rushes home and angrily confronts Geeta. She bursts into tears and swears she was at home all the while. The children, too, assure him that she is telling the truth.

Ajay is confused but all the more determined to solve the mystery and get to the truth.

Who is Geeta? Who killed Javed? Who can Ajay trust? Will Ajay ever know the truth?

For the answers, watch the entertaining thriller One 2 Ka 4 by K. Shashilal Nair.