Sailor Trinity has continued fighting as a warrior to protect the city's peace, empowered by the mystical "Master Force" passed down from the ancient civilization of Lemuria. Known as a beautiful yet powerful warrior, she was deeply respected by many. Targeting her is Dr. Dokuro, a deranged mad scientist named Kuroda. Seeking to absorb the superheroine's energy to return to his former state as the insatiable Masked One, he traps Trinity in a cunning scheme. As a result, Trinity is engulfed in endless pleasure, subjected repeatedly to relentless, overwhelming attacks. Gradually, her mind begins to break down, ultimately leading to a BAD END.