After saving a civilian caught in the attack by the Great Star Cluster Gozua, Charge Mermaid Aoi Nanaumi is nearly captured by the Space Beast Warrior Zorubi, but Commander Guild appears and she transforms into her Charge Mermaid form. Overpowered by Guild's strength, she faces a life-threatening crisis. Thanks to her comrades, she escapes safely and returns to base, changing into her red uniform. Sensing someone watching her, her heart begins to tremble. After finishing her night patrol and returning home, she thinks of her teammate Ryuichi Kengasaki and can't resist masturbating. While showering, she hears strange noises. She checks outside the front door, but no one is there... [BAD END]