Saoi Mizushima sets out alone on a dangerous mission to save her partner, Maya Hino. However, urged by her commander, she discovers footage showing Maya committing murder and sexual assault as a rogue female combatant. Though doubting her own eyes, Saoi resolves to fight Zopher to rescue Maya. During battle, she encounters the female combatant and, suspecting it might be Maya, hesitates and attempts to flee. At that moment, a new super-strong monster appears! Saoi transforms into Dyna Maid and fights the creature, but during the clash, the female commander Garna arrives, revealing Maya's whereabouts and putting Saoi in grave danger. Garna injects Dyna Maid with a lust-inducing drug, preparing her for brainwashing. Awakening, the bound Maid is crucified, with wires attached to every nerve in her body. As brainwashing takes hold, Dyna Phoenix—wearing Maya's form—appears on a monitor. When Garna fondles her body, Saoi experiences the sensations as if she were being touched herself. Already harboring deep feelings for Maya, Saoi is overwhelmed with intense pleasure whenever Maya appears to caress Garna. Bound and remotely brainwashed, she repeatedly climaxes from the electric pulses mimicking Maya's sensual touch. Then Garna's fingers slip into Saoi's crotch, drawing her, against her will, into submission under Garna's seductive words. Just like Maya, a black slime begins consuming Saoi's body and mind... The bonus video includes scenes of other combatants falling into corruption.