A woman insists only a butterfly-patterned pair of underwear can send her back to modern times, so she and her companions strip strangers to find it. They fear the Blue Banner Master and debate disguising someone as the Demon Lord to avoid capture. One volunteer walks into a guarded area despite warnings. Combat erupts and the Lord's aura suddenly returns, halting the search. Amid accusations and a command—"Take off your underwear!"—a man loudly claims, "I'm the Lord!" The group's plan collapses and the true authority and the woman's chance to escape remain unresolved.