A cyborg woman infected with a virus becomes the battlefield. Diatron 5 shrinks to microscopic size and pilots inside her body to fight the bacteria. This is Fantastic Voyage reimagined as a mecha action film, where the hero's body is the war zone and the only way to save her is to go smaller, deeper, weirder. Two kids and a sentient battle station called the "Star Wars" shouldn't work as a support crew, but they do. The whole film operates on that specific 1985 logic where the premise is so committed to its own absurdity that you stop questioning whether it makes sense and just watch it happen.
Ivy is the galaxy's last line of defense, a cyborg warrior whose computer core can sense evil across the cosmos. When a mysterious virus infiltrates her systems, she becomes the very thing she's sworn to fight. Her only hope lies with Diatron 5, an experimental mecha that can shrink to microscopic size and navigate the microscopic battlefield of her own body. Two determined kids and Diatron's brilliant creator join the fight, piloting the tiny robot through Ivy's internal landscape to battle the infection from within. But the virus is no accident. Behind the attack stands Mary, an androgynous force of chaos, alongside her blue-skinned brother and an army of mechanical horrors and alien demons intent on destroying Ivy and conquering the universe. What begins as a race to save one cyborg warrior becomes an all-or-nothing struggle to prevent catastrophe on a galactic scale. The real battle isn't fought in the vacuum of space, but in the digital depths of Ivy's mind.