Finding herself the sufferer of a fierce beast attack, Jane releases a vigilante campaign to quest the beast that tried to eliminate her. Jane's initiatives escalate, but her unpleasant background of substance abuse and mental disease bubbles to the surface area causing her family members, community, and also authorities to wonder about the authenticity of her account. Suddenly alone in her fight, Jane starts to question her very own memory of the attack ... to doubt if Monster exists in any way.