Maelstrom

In the late 21st and early 22nd centuries, Earth and her colonies lived in relative peace in the short yet productive time when humanity expanded across the stars under the United Earth Republic, and their universal military force, the OSA. But when a xeno-worshipping cult of colonists called the Triplicate came forth from the cosmic Maelstrom and seized the Argus system, war broke out, and the OSA sprang into action. But this Triplicate fights hard. The year is 2161, and this is one of humanity's darkest chapters.