Giant Robo the Animation: The Day the Earth Stood Still

The year is 20XX. Mysterious huge robots called "Giant Robo (GR)" started to appear all over the world and destroy cities. The earth was covered with fear. And their next target is Japan! The hero of this animation Daisaku Kusama, who works in a diving shop, encounters a mysterious girl, simply called V who leads him to make a contract with an enormous robot "Giant Robo 1 (GR1)" at the ancient ruins (Minami Yonaguni Island) in Okinawa. He made a contract with UNISOM (main organization) and was approved to be a commander of GR1. Thus his battle has begun against GRO (antagonist organization) and creates a lot of dramas. Before long, Giant Robo of the 21st century will ask the world the true meaning of its power.

Sent to jail after being accused of murdering Getter Robo creator Dr. Saotome, Ryoma Nagare must once again team up with his former comrades and pilot Getter Robo when Saotome returns from the dead and threatens humanity by unleashing his greatest creation - the Shin Dragon. Their efforts, however, are in vain as they fail to stop a nuclear warhead from hitting Shin Dragon, resulting in a massive Getter Ray contamination that wipes out 99% of the planet's population. Thirteen years after this great catastrophe, mankind continues to fight for survival against the Invaders. Out of the remains of the nuclear blast comes Shin Getter, piloted by the artificial human Go. With remnants of the Japanese military by his side, Go - along with co-pilots Kei and Gai - must use Shin Getter to exterminate the Invaders once and for all.

Humanity is under attack by demonic creatures called Oni. Unable to fight back by any other means, the scientist Dr. Saotome creates a series of giant robots that harness the mysterious power of Getter Rays, giving them the strength necessary to fight the Oni. The strongest of these is Getter Robo, and Saotome must enlist three very different men to pilot it - martial artist Ryoma Nagare, criminal leader Hayato Jin, and monk Benkei Musashibou. Together, the Getter Team fights to end the Oni menace forever.

A gigantic meteorite landed on earth a few years back. A mysterious capsule believed to have belonged to the aliens was discovered. Called the "black box," an international organization called "Project BB" was created to research it. Eight boys, including Manabu Yoshimura, attend International Academy, a school located near Project BB headquarters. They are enticed by their teacher Toukichi Hashiba's promise of "I'll give you class credit", and end up getting involved in his experiment. The experiment was to enter the eight empty chambers of meteorite. According to Hashiba's theory, the meteorite should strongly respond to strong human thoughts. He tells them to have a clear image of a great looking gigantic robot; if they do, something should happen... Then, a big spaceship appears in the sky and an alien calling himself Wercury appears in a 3-D image. He tells them he is from the Star of Prokimasi and that he has come to collect the meteorite of the Choshin people. If they do not hand it over, he will challenge the earth beings to a battle. Manabu and his friends are confused by the unexpected turn of events but the meteorite responds to the thoughts of the group and suddenly starts to transform itself into a gigantic robot. Then, attacked by the invading Prokimasi robot, they are forced to pull their strength together and fight back. But it is extremely difficult to put the wills of the eight together as one and the robot cannot fight in the way it should. The gigantic robot that Hashiba named "Gakusaver" and Manabu's eight; can they manage to protect Earth and the meteorite from the Prokimasi invasion?