Before we start....

It was a normal round in Forsaken, completing generators and surviving from the killer. But then, the survivors and killer get sucked up into a portal. They end up somewhere they don't recognize.

It was a normal day in the Vanilla Kingdom. The ancient heroes were having their daily meeting, but they get sucked up into a portal and end up in the room the survivors and killer were in currently.

In the inner solar system, the inner planets were playing cards. While mercury, was being... Mercury. A portal sucked them in and they were in the room the survivors, killer, and ancients heroes were in.

(My bum is too lazy to make more descriptions of how they got in the reaction room)