Flowers in the Attic: The Origin tells the story of the headstrong and determined Olivia Winfield (Rooper), who is working alongside her beloved father, Mr. Winfield (Hamlin) when she finds herself unexpectedly wooed by one of the nation's most eligible bachelors Malcolm Foxworth (Irons). After a whirlwind romance, Olivia becomes the mistress of the imposing Foxworth Hall, where she soon discovers that the fairytale life she expected has quickly become a nightmare. Under Malcolm's elegant exterior lies a dark heart, and a twisted evil lurks inside Foxworth Hall that will threaten Olivia's happiness and that of her children. Her attempts to keep them all safe ultimately push Olivia to become the terrifying version of herself, leading to her inevitable - and notorious - the decision to lock her grandchildren in the attic...