After the new and improved Marimar is ready to face society, Gustavo decides to take her to the opera, where she bumps into Sergio, and her plan for revenge against him and the Santibañez family begins. Fueled by anger, Marimar (assuming the identity of Bella and denying to Sergio and other people that she is Marimar) seduces Sergio constantly and then rejects his advances to hurt her. However, fate lead them to a new destination, Valle Encantado, where little by little, Marimar (as Bella), found even more obstacles that separates her from happiness, as Natalia Montenegro, the daughter of governor Fernando Montenegro (who also wants and falls in love with Bella), becomes obsessed with Sergio and at the same time, plans to make Marimar miserable.