Welcome to the world of the Microbiome Revolution, where your personality, success, and social status are determined by whose shit you eat. For Shia, a former A-lister on a steady decline , life is a passive haze until he rediscovers his "vintage" 20-year-old self-produced product. The experience reboots his consciousness and leads him to the horrifying secret behind Soylent Brown Corporation's miracle supplement. In a society pacified by designer digestion, Shia becomes a lone warrior fighting a disgusting, world-altering truth that could restore humanity or get him flushed.