The episode opens with a group arriving at the Forbidden Zone in River City, confused by hallucinations like the smell of braised pork. They soon witness a strange welcoming ceremony filled with illusions, hinting at a deeper mystery in the area. Suddenly, a warning announces the presence of a rare S-rank female superhuman, prompting urgency to form a marriage alliance to secure humanity's future. Tensions rise when a visitor confronts a woman accused of uniting ghosts and building forces to invade their base. The episode ends with a firm rejection of any invasion plans, leaving the conflict unresolved and escalating the impending threat.