"Deadly Playmate" 2018 focuses on a young woman who, after experiencing a difficult childhood or a traumatic event, forms an unhealthy and dangerous attachment to an imaginary friend or a doll from her past. As she grows older, this "playmate" manifests as a malevolent entity or an alter ego, encouraging her to commit violent acts or seek revenge. The film typically explores the psychological horror of her fractured mind and the deadly consequences of her childhood companion turning into a murderous accomplice.