The brass has obviously had enough. Weyland-Yutani has overstepped way too many bounds. And the bloodbath on HR-972 is the final straw. Whatever those corporate goons are cooking up in bioweapons is now the property of the United States Colonial Marine Corps. And it's repo time. Sure, this isn't going to be pretty, but if it were meant to be pretty, they wouldn't be sending you. Saddle up, kids, this is going to be a bumpy ride.
Weyland-Yutani has seceded from all nations of Terra and has declared itself a colonial power. Their first act was lightning strikes on US Space Command outposts in their "home sector". You are a member of the Marine Space Force, Eridani and have been called up to strike back. Your target is a WY corporate outpost on Thetis. Located there are some prime WY Execs that need to be captured at all costs. Warnings of a new bioweapon have been issued.