1.Someone is trapped somewhere
2. The setting is revealed to be a spaceship floating in space on top of earth
3.Astronaut shows no sign of life inside the tunnel
4.Some kind of experiment was done in the lab
5.More signs of death: more bodies floating inside the spaceship
6. The person in the beginning is getting more scared and emotional
7.Communication is lost between spaceship and earth
8. There is a hibernation chamber inside the spaceship which is where the survivor is located
9. The experiment was about mutated bats, and the bats broke out, causing the crews to be infected and dead.
10. Earth is dying too. The survivor lost hope.
