Marimar is the story of a woman who has been deprived of everything that is due her. Separated from her real parents at a young age, Marimar is lovingly raised by an old couple. Unaware that she is an heiress, Marimar lives a carefree life by the sea. Marimar's complicated life begins when she marries Sergio. After learning that Sergio is just using her, she leaves the Santibañez mansion, changes her identity and returns as the rich and heartless Bella Aldama.