Amelia Sullivan and her sister Jessica Sullivan grew up together in an orphanage, and the dark times there left them both with deep trauma. Jessica's love for her sister gradually became twisted, developing into an intense desire to control every aspect of Amelia's life. After Jessica destroyed her hard-earned career and stole her boyfriend of one year—who then suggested they all live together—Amelia's love for her sister turned to hatred. To get revenge on Jessica, Amelia sets her sights on her ex-boyfriend's father, Sebastian Hawthorne, hoping to become Jessica's mother-in-law to counter her sister and escape her manipulative control. However, in the process, Amelia finds herself nurtured and redeemed by Sebastian's healthy, accepting, and unconditionally trusting love.