Hum Saath Saath Hain is a 1999 Indian drama film written and directed by Sooraj R. Barjatya. The film was produced and distributed by the home production of Sooraj Barjatya, Rajshri Productions. The film stars Salman Khan, Saif Ali Khan, Mohnish Behl, Tabu, Sonali Bendre and Karisma Kapoor, while Alok Nath, Reema Lagoo, Neelam Kothari, and Mahesh Thakur play pivotal supporting roles.
Plot: The plot revolves around the Chaturvedi Family, the father, Ramkishan Chaturvedi (Alok Nath), a rich businessman, and his second wife Mamta Chaturvedi (Reema Lagoo). Ramkishan has 4 children: Vivek (Mohnish Behl), Prem (Salman Khan), Vinod (Saif Ali Khan) and Sangeeta (Neelam Kothari). The first half explores the love lives of each of the three sons : Vivek with Sadhna (Tabu), the daughter of his father's business associate, Prem with Preeti (Sonali Bendre), the daughter of a family friend and Vinod with Sapna (Karisma Kapoor). Mamta's 3 best friends along with Sapna's father, fill her head wit thoughts as to why Vivek should not be in charge of the family inheritance, as he is the stepson and not Mamta's real son. This causes Mamta to feel scared about what will happen. The story takes a bitter turn when Sangita's brother-in-law cheats her husband, Anand (Mahesh Thakur) from the inheritance and his share in the family business. This makes Mamta very paranoid and makes her question her husband's decision to make Vivek, her step son, the head of their family business. She demands that Ramkishan divide the business equally between all the sons instead of putting Vivek in charge. Ramkishan refuses because he thinks this will divide the family. Vivek is heartbroken when he finds out but decides to defuse the situation by telling his mother that he will move back to their ancestral village Rampur to take care of the new factory that they had recently set up there. In his place he asks his father to put Prem in charge of the family empire. His wife, Sadhna supports his decision. Vivek and Sadhna move to Rampur. Prem flat out refuses to replace his brother as the head of the family. But Vivek convinces him to go along with the plan in the interest of preventing further conflict within the family.