Plot
Demonologists Ed and Lorraine Warren confiscate the demonic Annabelle doll from nurses Debbie and Camilla. During the drive back home, the doll summons spirits to attack Ed. Annabelle is locked in a sacred glass case in the couple's artifacts room to ensure the evil is contained, with the help of Father Gordon.
One year later, the Warrens welcome Mary Ellen who will be babysitting their daughter Judy, while they travel overnight to investigate a case. At school, Judy notices a ghostly priest following her. Judy's birthday is coming up and she tries to invite her classmates who reject the invitation because they think Judy is a freak due to her parents' work. Mary Ellen decides to have an early birthday celebration for Judy. Her friend Daniela arrives uninvited to the Warrens' home. The real reason she came is to try and speak to her deceased father's spirit to apologize to him for a car accident that killed him, for which Daniela blames herself. (She had been driving but had not actually been at fault.) She sneaks into the artifacts room, touches nearly everything, opens Annabelle's glass case, and picks her up, which releases the Annabelle demon. The Annabelle demon releases other spirits such as the Ferryman, the Bride, a Feeley Meeley board game, and the Black Shuck, that start wreaking havoc around the house.
Mary Ellen's romantic interest Bob Palmeri arrives and is attacked by the Black Shuck. Judy and Mary Ellen are confronted by other spirits. Daniela sneaks back into the house to return the artifacts room's keys. She is locked inside and is tormented by the haunted objects. Upstairs, Mary Ellen is tormented by the Ferryman, whose last victim has a striking resemblance to Mary Ellen. She escapes and runs to Judy's room, where the young girl is being attacked by the Annabelle doll and the demon. The girls answer the phone and believe it is Lorraine until the voice instructs them to give a soul to Annabelle. They go into the artifact room, encounter Daniela, and rescue her.
Judy explains that they must lock Annabelle back in her case so that the other spirits can rest. Bob protects Judy from the Black Shuck while she retrieves Mary Ellen's asthma inhaler, and Daniela is possessed by the Bride. Mary Ellen and Judy find the doll when the ghostly priest, acting as Judy's guardian, guides them to the Ferryman, which has the doll in a locked closet. Judy finds the key to the closet in the Feeley Meeley board game, and Mary Ellen enters the closet to retrieve the doll. They have trouble getting the doll to the artifacts room: hands emerge from the Feeley Meeley board game that grab at them and Daniela attacks. Daniela is immobilized when Judy projects Ed's recorded footage of the Bride's exorcism on her. Judy and Mary Ellen bring the doll to the artifacts room and place it in the case, but the demon telekinetically prevents them from closing the case's door. A freed Daniela then arrives to help them close the door, and she also still has the key to lock it. After the case's door is locked, the disturbances cease.
Ed and Lorraine return the next morning. At Judy's birthday party, all of Judy's classmates arrive. Lorraine takes Daniela back into the artifact room where Daniela apologizes for her actions. Lorraine then gives her a comforting message from her father.
