For decades, if not centuries, the world's governments have been covering up historical events that have involved people known as "Retrohumans." In ancient times, these people were seen as gods or monsters. In reality, they are formerly ordinary people who each host a mysterious and unstable retrovirus known as "Proteus." Proteus gives its hosts seemingly random superhuman abilities, many of them being extremely dangerous if misused. Throughout history, the cooperation of Retrohumans, either willing or not, has been crucial to winning wars - something that has been kept quiet in today's "rational" world. Will a new group of American Retrohumans, Squad Omicron, succeed in escaping the government's grasp? Together, they are...THE RETROS!