Frank and Sadie Doyle, upper-crust mediums (media?) are drinking. Of course. Sadie has an emergency — she can’t find her beverage. Frank shares his, then looks forward to making some fancy cocktails. Sadie suggest Bloody Marys, and after they go back and forth on the topic (while standing in front of a mirror they drunkenly confuse for a portrait), they say the phrase enough times that Bloody Mary herself makes an appearance.
Frank questions the logic of myth, but Mary doesn’t really know — she seems to remember drowning her children, but she’s not sure. Anyway, now she scares kids.
Sadie wants to chat with Mary because she likes people named for drinks, and vice-versa, so she agrees to let Mary scare her. She and Frank then exaggeratedly try to sell their fright, buy Mary seems to be buying it, even though they’re sort of laughing their asses off the whole time.
Frank offers Mary a drink, and she is eager to spend time with adults for a change.
After a few drinks, Mary shares some gossip about the young kids she scares, and how much she kind of hates kids in general. Then, drunk, they try to dot he Bloody Mary game — with Mary herself. So it doesn’t really work.
Another slumber party is summoning her, but before she goes, Frank and Sadie suggest a slumber party of their own. They help Mary try to resist the pull, but that results in a group of teenage girls getting pulled into the Doyles’ apartment instead. Everyone, adults and kids alike, want the kids to go back where they came from. But Mary can only do that if she goes with them, and she really doesn’t want to.
The Doyles realize they can invite Mary over any time they want just by saying her name in font of the mirror, so Mary heads off to work.
Frank and Sadie feel victorious over the turn of events, even though they’re not really sure why. Oh well, a happy ending is a happy ending.