- Terraforming efforts begin on Acheron (LV-426).
- The mining team from the DSMO Marion discover Xenomorphs and a derelict alien spacecraft deep underground on LV-178.
- The Xenomorphs spread to the Marion in orbit, and an accident leaves the ship crippled and in a decaying orbit.
- Ash directs Ellen Ripley to the Marion aboard the Narcissus in response to the ship's distress call.
- After recovering a necessary fuel cell from LV-178, wiping Ash's AI and having her memory of the events erased, Ripley leaves the Marion aboard the Narcissus while Chris Hooper escapes aboard a shuttle.
- Gemma Keech
- Lucy Jordan
- Vic Jones
- Josh Baxter
- Karen Sneddon