A young couple, John and Mia Form, are expecting their first child and are busy making preparations for the new arrival. John gifts Mia a vintage doll for their nursery collection, which she happily adds to her collection. However, their joy is short-lived when their home is invaded by two members of a satanic cult. The intruders attack the couple, severely injuring Mia, but police intervene, saving them. In the aftermath, the couple tries to move on, but they soon notice strange and disturbing occurrences centered around the doll.

Mia, trying to recover from the trauma, starts experiencing terrifying supernatural events that become more frequent and intense. Their attempts to get rid of the doll fail as it keeps returning, bringing a sinister presence into their home. Seeking answers, Mia and John encounter a series of people who help them understand the malevolent force attached to the doll. As the dark activities escalate, they realize they must confront the evil before it destroys their family.