Humans have depleted Earth's natural resources and are exploring other planets for a new supply of minerals. The crew on space station "Theseus" situated on planet Chori-V have made a significant discovery, finding an abundance of minerals that can be used to sustain life on Earth. One of the minerals they find are strange living rocks that show signs of intelligence. They call these rocks 'The Watchers'.
However, as time passes, the crew members start to die in mysterious ways. Some areas of the space station are sealed off and deemed uninhabitable as the crew try to figure out the cause of the deaths. Take control of a nameless survivor on Theseus as you investigate further and try to put an end to the source causing the deaths.