My step sister's marriage: I am her substitute

Alice Harper marries her stepsister's fiancé, Ryan Bennett, in a contract marriage to save her family from financial ruin, unaware of the storm ahead. After giving birth, her jealous step sister Clara steals her child and manipulates Ryan into divorcing Alice and exiling her from the country. Alone and heartbroken, Alice rebuilds her life abroad and discovers she gave birth to twins. Five years later, Alice returns to Australia as a wealthy doctor, determined to reclaim her child, uncover the truth, and seek revenge. However, Clara, now married to Ryan, will stop at nothing to protect her secrets, even as new enemies arise and old wounds are reopened.