Evie follows a masked stranger into the woods on Halloween night, only to find herself captive of three mysterious, non-human men who desire her. Saved from a gruesome fate, Evie places her trust in a masked figure who leads her away from danger and into a deeper peril. She discovers that her captors are not human and possess monstrous appetites that only she can satisfy. The narrative explores Evie's struggle for survival and agency as she becomes the object of their intense, possessive desires, all within the confines of a single Halloween night.

The premise of 'Ours for Halloween' sets up a dark and intense monster romance narrative, focusing on themes of captivity and monstrous desire. The explicit content warnings and MMFM dynamic suggest a niche appeal within the romance genre, likely attracting readers who enjoy darker, more extreme themes. The novella format implies a fast-paced plot driven by immediate conflict and escalating tension between the characters. The story's focus on Halloween and monstrous entities points to a blend of horror and romance elements, aiming to thrill and titillate its intended adult audience.