After a long voyage, the surviving humans spacecraft finally landed on an unknown planet.
There are all conditions suitable for the existence of life.
But nobady there.
You ordered to explore the planet, hoping to find the answer.
However, you discover that this is a world controlled by the undead.
You hesitate to go on exploring,
Or go back to tell others the unfortunate news.
But you found that you have been caught in the heavy siege of the zombie army......