Fiona Green, the feared dark mage in The Emperor and the Saint, was always meant to meet a tragic end at the hands of the story’s main couple. However, everything changes when the novel’s author suddenly awakens inside Fiona’s body. Despite being abandoned by her arrogant family, treated with cruelty, and sent to the dangerous battlefield of Heylon, Fiona refuses to follow the original storyline. Instead, she chooses to use her powerful magic to protect others and change her doomed future. But her plans begin to shift after she saves Siegren, the male lead who was once destined to become her enemy. As their relationship slowly changes from hostility to trust, Fiona must carefully balance rewriting her fate while trying not to destroy the original story’s happy ending.