«The commander is dead, thrown into the cold, unforgiving void, and it was I who voted against her, sealing her fate. Now, uncertainty torments me. The ship's doctor claims that the host was not on board; that the threat is still latent among us. Communications have been extinguished since we left the planetoid, and I know that at least one of the crew is harboring those abominations that infiltrate the brain and usurp the will...».

«...5 days after the last vote, we remain isolated from everything, crossing the void at a dizzying speed, living day by day on the way to the Aurora space station. Time is running out and return is impossible. The new commander has called for another vote, and the engineer's gaze shines with a disturbing suspicion, or maybe I'm losing my mind... anyway, I think I'll vote for her...».

In The Guest, players will represent the crew of the extrasolar ship Beagle, which is attacked by a strange parasite that lodges itself in people's brains, controlling their will. A hidden role game in which the tension is real in each vote. Some players will represent infected crew members who try to infect or kill the rest, and others will be healthy crew members who try to safely reach the Aurora space station.
The objective of each team is to kill the members of the opposing team, but no one knows who the crew members infected by the hosts are. But be very careful, a third side could appear if someone loses their mind.

—description from the publisher