Fiona, the master of Phoenix, has been the victim of a dark scheme that left her with a mental disability. Fortunately, her brother has stayed by her side, caring for her for years. After an unexpected incident, Fiona regains her identity and must confront the doubts and provocations from others, as well as the schemes and poisonings within Phoenix. Together with her brother and sister-in-law, she embarks on a challenging journey to reclaim her former glory.