When a UFO arrives from space and attacks the Getter Institute, Getter Robo is launched to stop it; but the might of the UFO and its giant space monsters prove to be too much for the Getter team. Not only is Getter Robo defeated, but Ouishan is killed in action! With Getter Robo out of commission, the world's only hope appears to be Great Mazinger, but the aliens' power might also be too much for even him. Can Dr. Saotome build a new Getter Robo in time to help save Great Mazinger, Japan, and the entire world?
神谷明
as Ryo Nagare
キートン山田
as Hayato Jin
沢田和猫
as Shiro Kabuto
富田耕生
as Dr. Saotome
吉田理保子
as Michiru Saotome
柴田秀勝
as Kenzo
大竹 宏
as Boss
西尾徳
as Musashi Tomoe
野田圭一
as Tetsuya Tsurugi
八奈見乗児
as Benkei Kuruma
中谷ゆみ
as Jun Honoo
