GRET-50 — Giant Heroine Hyper Four Sisters Annihilation Plan: The Hipolyute Alien Appears!!

Hyper Mummy has fought countless aliens and monsters trying to invade Earth. Her body is in tatters from all the fierce battles she has faced. The Hypolyte aliens, who hold a grudge against the Hyper tribe, attack Earth to eliminate Hyper Mummy. Hyper Mummy fights back, but is trapped in a special capsule and finds herself in a desperate situation. At that moment, sisters from the faraway planet Hyper arrive to help! Will the Hyper Sisters be able to defeat the Hypolyte aliens, rescue Hyper Mummy, and protect Earth?! [BAD END]