As a young woman, Ritsuko protected Earth as the beautiful warrior Spandexer. Eighteen years have passed, and she now lives peacefully as the wife of Dr. Narita at the Central Institute of Scientific Physics, blessed with a son. However, one day, Gerhardt's evil forces threaten Earth once again. Determined to fight to protect the planet, Ritsuko is captured after her husband and son are taken hostage. The enemy forces make sexual demands on her son, and tormented by fear, he ends up embracing his own mother. Then, under the enemy's control, Ritsuko's Spandexer mask is removed, revealing her true identity to her son. Now, the fate of Earth and her family faces a new crisis.