Two young boys sneak aboard a spaceship and find themselves whisked away to the mysterious planet Terra. There, they encounter Gamera's old foe Gyaos and two female aliens with a taste for human brains. Gamera must save the children and battle the new monster Guiron, whose entire body is a deadly living weapon.
Akio
Tom
Tomoko
Dr. Shiga
Officer Kon Kondo
Kuniko
Florbella
Elza
Barbella
Gamera
Toshio Sakurai (archive footage)
Eiichi Kanamura (archive footage)
Masao Nakaya (archive footage)
Jim Crane (archive footage)
