It was supposed to be an evening with friends, a little too much cheap wine, ridiculous tarot cards and a Ouija board found on a dubious site. Creepy and absurd at the same time, Satanism was just a pretext for tossing around the most blasphemous prayers with a beer in hand. But when Elliot, Anthonio, Ysée, Prudence, Darren, Kyle and Melly finally summon something that actually responds, they realize that messed-up invocations may not be as harmless as they thought.
With grotesque nightmares, improvised rituals gone wrong and annoying signs invading their daily lives, the group of friends will have to come to terms with their pseudo-satanic delusions and a much more real terror. After all, what could be worse than having done Something as stupid as this?