They were in a dark room

It looked like a place to summon a ghost and communicate with the dead.

There was a tv right in front of them saying 'task: summon lady of the lake' (yes those are spirits!)

There was or course water around them and only a tiny square of platform below them.

They had to do it.

They started saying the hum to summon them... it was horribly wrong.

They could feel something grab them into the water, they tried to fight back but it was no use!

All the screen could see was the ultimate being dragged into the water and blood started to appear.