Masked Vengeance: In My Sister's Name - Dramabox

Leah Ernst, an orphan, has a twin sister named Lenny Ernst, who suffers from a heart disease. When presented with the opportunity to be adopted by a wealthy family, Leah sacrifices it for Lenny, setting their lives on divergent paths. Years later, Lenny, now the heiress of Scott Group, dedicates herself to finding her sister. Meanwhile, Leah endures constant torture and deceit from her husband and his family, culminating in a fall from a high building.