Kuch Khatti Kuch Meethi is a family comedy drama. It is loosely based on the 1961 Hollywood movie The Parent Trap. The movie follows the story of twin sisters – Sweety (Kajol) and Tina (also played by Kajol), who were separated at birth. Sweety lives with her father Raj Khanna (Rishi Kapoor), a wealthy businessman, while Tina lives with her mother Archana (Rati Agnihotri) in London. Before their birth, Raj’s evil sister Devyani (Mita Vashishth) tricked her brother into believing that Archana had an extra marital affair, which created the feud between them, followed by their subsequent separation. Later, when Archana gave birth to the twins, one of them was taken by Raj and Archana left with another to London. Many years later, Sweety, tired of her evil aunt, travels to London and coincidentally meets her twin and realises the truth. The twins decide to switch their places and reunite their family. Will they succeed in their mission?