Female lead Cassandra Calloway and her sister Samantha Calloway are twins who grew up in a family favoring males over females. During a fire, their father, Arthur Calloway, chose to leave them to burn so he could have a son later. Cassandra was pushed to safety by Samantha in the nick of time, and Samantha was saved by firefighters, but the twins were separated. Years later, Cassandra, adopted by a wealthy family and renamed Cassandra Montgomery, is now a corporate CEO who has spent years searching for Samantha. Meanwhile, Samantha lives in misery, struggling to care for their paralyzed mother and deal with her gambling-addicted awful father. One day after work, Samantha Calloway catches their two-faced nanny, Nadine Fowler, abusing her mother. She also discovers an illicit affair between Arthur Calloway and Nadine Fowler. Fearing Samantha Calloway would kick him out if his affair with Nadine Fowler to have a son was exposed, and prodded by Nadine Fowler's threats and bribes, they decide to start a fire to burn Samantha Calloway and her mother to death. Overjoyed at the news of finally finding Samantha, Cassandra Montgomery rushes over, only to find Samantha dying in a hospital bed. Filled with grief and rage, Cassandra Montgomery uncovers the truth. Upon learning that their mother's death and Samantha's coma were caused by their scumbag father and the nanny, she vows revenge against the vicious nanny and her scumbag father. First, Cassandra Montgomery attends Nadine Fowler and Arthur Calloway's engagement banquet disguised as Samantha. Holding her mother's memorial portrait, she turns Arthur Calloway and Nadine Fowler's engagement party into a funeral. Then, she lures her father, the nanny, and the nanny's brother into a trap at her mansion. Using her immense wealth and brilliant schemes, she tricks the fraudulent nanny into losing her life savings. She then sows discord to ruin the affair between the nanny and her father, ultimately ensuring that all the villains who hurt Samantha and their mother are brought to justice...