In the Korean web novel adaptation, 'Oh Mari' follows the transformation of an average Korean woman who suddenly finds herself reborn as Maristella Janice La Bellefleur, the best friend of the main character in 'My Dorothea.' Knowing her tragic fate in the original story where the protagonist, Dorothea, betrays her resulting in her death sentence, Mari is determined to navigate this new life, determined to thrive and rewrite her destiny.