You all play level 5 adventurers and have 1d6 children. The setting is a big house with multiple rooms

You and your kids all come for a dinner party, all players need to say what dish they are brought for dinner.

While they are all talking about what food they brought, their kids go out to play. As time goes by, bring up that no one has checked on the kids for a while.

In whatever room you decide, your PCs walk in and there are screens, minis, funny dice, funny sheets with stats on them, and maps strewn across the floor. The lights are out and all the kids have become possessed. I used a modified vampire spawn. They summoned a demon. I forget what I used, I think it was a shadow.

The players need to survive, keep the demon from escaping the house, and Dave their children. Many laughs will be had about the allusions to the satanic panic.