Dillagi is the story of Veer Singh (Dara Singh) who comes to Mumbai from Punjab with his wife and two sons Ranveer (Sunny Deol) and Rajveer (Bobby Deol) . They start with a small dhaba and turn it into a big international hotel. Veer Singh's wife is diagnosed with cancer and she passes away. She asks Ranveer to take care of Rajveer, his younger brother. Shalini (Urmila Matondkar) joins college and is attracted towards Rajveer. Rajveer is a spoilt brat who is selfish and only thinks about his own self. Ranveer sees Shalini and falls in love with her, too. Rajveer makes fun of Shalini when she proposes marriage. Shalini and her parents Rama Mehra (Reema Lagoo) and Mr. Mehra (Kulbhushan Khurbanda) are insulted by Rajveer. Ranveer and Shalini are brought together by their families and Shalini falls in love with Ranveer. But here Rajveer realises he is in love with Shalini and decides to get her back into his life. Shalini makes him understand that she loves someone else and they are planning to get married. When Rajveer realises that Ranveer loves Shalini he becomes upset. Ranveer meets with an accident and goes into a coma but he becomes well and Rajveer mends his ways and becomes a responsible person.