Sayaka Aiuchi transformed into Sailor Frontier with the power of the legendary treasure Master Force from the ultra-ancient civilization of Lemuria and fought as a beautiful girl warrior to protect the peace of the city! One day, Dr. Brainwashing, a mad scientist nicknamed Dr. Skull, plans to brainwash the frontier and assassinate the president. Therefore, I decided to give the captured frontier a pleasure training of shame first! The frontier, which has been unknowingly pleasure-brainwashed, becomes an agent of evil in the name of justice ... ・[BAD END]