28-year-old archivist Alexandra Lawrence always dreamed of spaceflight, but her chronic illness left her grounded working in an archive for a defunct space exploration company. After she has an unsettling encounter with an alien specimen from the Tereus expedition, Xandra digs into the mission records and learns some of the crew never made it home. Xandra is used to being sick, so she can't tell if the lingering effects of her exposure are something to worry about or one more way her body is letting her down. With multiple fatality notices in front of her, she needs to fine out--fast. As Xandra explores the records, she discovers more secrets buried in the archive: betrayal, violence, and crewmembers' growing suspicion that something about Tereus isn't right.