Mara Clara: The Movie (1996)

Mara and Clara were switched at birth in the nursery when they were born, and the details of this event were recorded by hospital staffer Kardo in his diary. Mara lived as the daughter of poor Susan and Gary Davis while Clara, their real daughter, was brought up by the wealthy Amante and Almira del Valle. The good-natured del Valles take in Mara as a servant and decide to pay for her education, not knowing that she is their real daughter. Gary, who is actually a gang/syndicate leader, approves of the idea that Mara lives with the del Valles to extort money. Clara makes life for Mara difficult, but over time they learn their true identities, damages are paid, and they all know where they stand.