A group of astronauts are locked in a simulator in order to study the long-term effects of space travel. They were alerted to the fact that they can experience the unexpected challenges and scenarios which will have to face. After losing communication with the outside world, the group of astronauts are convinced that this is a test. They arrive shortly, not to know what is experienced and what is not. In the 400th day, they find a man in their kitchen dirty. After more discussion, the team decided to leave the simulator. Exit the spacecraft, astronauts performed shocked the mission they were sent was not a simulation.