Nanami Aoi, a charge mermaid who works as a mechanic for the Video Sentai Chargeman, is attacked by someone on her way back to the base after completing maintenance on the special mission ship Charge Base. - Charge Base was attacked by the hijacker and galactic beastman Rhydon, who is famous throughout the universe. - A mermaid fights alone to protect the charge base, but is unable to stand against Rhydon and is forced to retreat. - Nanami tries to get back the Charge Base, but the Charge Base system is controlled by Ridon and there is nothing she can do. - Nanami transforms into a Charge Mermaid again and continues to fight without the help of her friends, but not only is she unable to stand up to Rhydon, but Gozua's executives Garuk and Mahames also appear, and she is exposed to a fierce attack, her reinforced suit is destroyed and she is completely defeated. - be hurt by - The battered mermaid is forced to wear a humiliating chastity belt over her reinforced suit by Mahames. - The mermaid desperately tries to resist the damage from the battle, the stimulation of the chastity belt, and the shame, but she is tormented by Garuk and Rhydon and forced to fall. - Furthermore, Nanami, whose transformation is canceled, is even toyed with by Vidler's soldiers. - [BAD END]