A group of teenage friends are infiltrated by the Red Rose app, which flourishes on their smartphones and threatens them with dangerous consequences if they don't comply with its demands.A group of teenage friends are infiltrated by the Red Rose app, which flourishes on their smartphones and threatens them with dangerous consequences if they don't comply with its demands.A group of teenage friends are infiltrated by the Red Rose app, which flourishes on their smartphones and threatens them with dangerous consequences if they don't comply with its demands.