Eighth and final Gamera film from Daiei studios in a last, desperate(and failed) attempt to stave off bankruptcy itself presents an artistically bankrupt story about (you guessed it) a mysterious alien battleship(just like from "Star Wars") that threatens the Earth, and proceeds to somehow resurrect all of Gamera's dead foes(via all flashback footage!) to throw at him, before it fulfills its suicide mission against it... Subplot with three alien women with super powers is utterly tacky and idiotic; conclusion a sad way to end this series, a truly jaw-dropping fiasco. Similar in premise to the nadir of the first Godzilla series "Godzilla's Revenge/All Monsters Attack".
Review of Gamera: Super Monster
