Backwater is doomed by the regular visits of the undertaker and its dwellers blame a tramp.
As Drukhari raiders plague an Imperial planet, the embattled Astra Militarum send out a desperate cry for help. Salvation arrives in the form of a force of Space Marines, but the population of the planet soon learn to be careful what they wish for...
The movie is set in 2007, taking place before or right after the first part of Metal Gear Solid 2: Sons of Liberty.