Society is on the brink. Low birth rates and an uneven gender balance has pushed everyone to the edge. But a new government program aims to fix all of that. Project Enduring Household is designed to rebuild the family unit and bring peace and prosperity to the people again. However, there is a dark side. The people who join the program will be forever changed, with the men becoming more masculine, the women becoming more feminine, and a third member added to every family.