Nick and Janine live in bliss until her ex warps time to try to tear them apart by using Nick's old girlfriend. As Nick's memories and reality disappear, he must decide what he's willing to sacrifice to save -- or let go of -- everything he loves.

Finding herself the victim of a violent monster attack, Jane launches a vigilante campaign to hunt the beast that tried to kill her. Jane's efforts intensify, but her troubling history of drug use and mental illness bubbles to the surface causing her family, community, and authorities to question the authenticity of her account. Suddenly alone in her fight, Jane starts to doubt her own memory of the attack...to doubt if Monster exists at all.