Summoning a demon

A team agreed to summon demons. They gather at someone’s house when their parents were not there, set up everything they need, draw a pentagram, candles, and some other things. They start saying the words, perform the ritual. And they tell one to go to the bathroom with a candle to see if there is a message, something. He goes there, there is nothing, no one, no message. He returned to the room, when no one was there. He thinks that he is being pranked, so he starts calling them and looking for them around the house. He looked for them like that, he looked for them, but they are nowhere to be found. The next day, people see that their children are nowhere to be found. They find them at that house, all gone crazy, sitting in the room where there is a pentagram and candles, where the ritual was performed. Everyone is frozen in place and shaking. And the one whose house he went to look for them was never found. The others ended up in a madhouse, they claim to see some demons, something like that. No one knows what exactly happened that evening