Based on the second gothic novel of the iconic V.C. Andrews series about the Dollanganger family, the film begins ten years after the siblings have escaped the attic where their mother Corrine (Heather Graham, "Drugstore Cowboy") and grandmother Olivia (Ellen Burstyn, "Political Animals") kept them locked away for more than two years.

A decade after Cathy (Rose McIver, "Masters of Sex," "Once Upon a Time"), Christopher (Wyatt Nash, "Pretty Little Liars") and Carrie (Bailey Buntain, "Bunheads") escaped from their grandparents' attic at Foxworth Hall, "Petals on the Wind" continues to follow the twisted plight of the family as they attempt to put their sordid past behind them, but soon discover certain secrets can't be left behind. When Cathy finds herself in an abusive relationship with a fellow dancer, Julian (Will Kemp, "90210"), Christopher and Cathy are forced to face the forbidden feelings they developed for one another while coming of age during captivity. But when tragedy strikes the Dollangangers once again, Cathy returns to Foxworth Hall to confront her grandmother and seek revenge on her mother with a plan to seduce her husband Bart (Dylan Bruce, "Orphan Black"). When Christopher runs to Cathy's side, the two are determined to start over again - together.