Thera

Thera is a desert planet in the milky way galaxy. Thera is mostly a testing planet. where the economy is based on scientific discoveries. with a population of millions Thera was successful place. All that ended when an alien virus broke out among the population, transforming people into walking corpses and undead monstrosities. The raging virus infected the entire population of Thera, making it a zombie infestation. on the surface of the planet is a lab containing a vaccine sample from a futile attempt to stop the Thera virus. These vaccine samples are vital to the survival of humanity. The president of the Trans-Federation of Worlds gave an order to wipe out all organic matter on the planet with a doomsday device called a jolt ship. The SAS have only 15 minutes to retrieve the vaccine and leave the planet before it is destroyed.