Diana Miller, a dedicated employee at Home Depot, is tormented by Jude Carter, a fellow worker in a wheelchair who uses her position to harass and stalk Diana. As Jude's relentless cruelty escalates, Diana's attempts to report her are dismissed, leaving her feeling trapped and desperate. Driven to the edge, Diana devises a series of increasingly dangerous plans to rid herself of Jude. Each attempts ranging from sabotaging Jude's wheelchair to poisoning her food fails, with Jude taunting Diana at every turn and evading death with a smugness that drives Diana mad.