Epsilon Outpost

A Prefabricated Base in a Distant Galaxy

From the introduction:

This is one of many thousands of prefabricated bases, scattered across known space. These domed bases may be placed in orbit, undersea, raised on platforms, or sunk into the ground in remote areas. Due to the modular construction, the bases see a variety of uses: scientific research, listening post, supply depot, etc. Epsilon Outpost was one of numerous bases established during the early colonial period of the star system. While it was officially decommissioned decades ago, the base is still on the register of survival shelters. As a viral cataclysm overwhelms the colony, a desperate band sets out to raid the base for its supplies.