In the distant future, humanity has found a way to live forever by purchasing mechanical bodies, but this way to immortality is extraordinarily expensive. An impoverished boy, Tetsurou Hoshino, desires to purchase a pass on the Galaxy Express 999—a train that travels throughout the universe—because it is said that at the end of the line, those aboard can obtain a mechanical body for free. When Tetsurou's mother is gunned down by the villainous machine-man hybrid Count Mecha, however, all seems lost. Tetsurou is then saved from certain death by the mysterious Maetel, a tall woman with blonde hair and a striking resemblance to his mother. She gives him a pass to the Galaxy Express under one condition: that they travel together. Thus, Tetsurou begins his journey across the universe to many unique planets and thrilling adventures, in hopes of being able to attain that which he most desires. [Written by MAL Rewrite]

Conan was the only child born on Remnant Island, a place settled by a group of refugees while they fled a terrifying wave of magnetic bombs that wiped out most of humanity. After 20 years, most of the castaways have died, save for Conan and the wise old man that raised him. Believing Remnant Island to be the last inhabited place on Earth, Conan is shocked when he discovers a young girl named Lana washed up on the beach one day. Though he is thrilled to learn that humanity has survived, Lana tells him the nation of Industria wants her as a hostage to force her grandfather, Dr. Lao, to power their machinery. Their conversation is cut short when Industria's top pilot, Monsley, suddenly appears and seizes Lana. Determined to save her, Conan immediately sets off from Remnant Island and begins a journey that will ultimately determine the fate of the world. [Written by MAL Rewrite]

The third of Tadao Nagahama's Romance Super Robot Trilogy. (#1: Chou Denji Robo Combattler V, #2: Chou Denji Machine Voltes V) After the destruction of their home world, the survivors of the planet Barm head toward Earth with the goal of negotiating the purchase of land to emigrate to. Unfortunately, during the negotiations, the Barmian's leader, Leon, is assassinated by his second in command, Olban, and the delegation from Earth is framed for the murder. In the ensuing chaos, Doctor Isamu Ryuuzaki of the Earth delegation is shot and killed. Shortly after the disastrous end of the talks, the Barmians (called "Valerians" in Starbirds) begin a campaign of terror against Earth, lead by Leon's son, Admiral Richter, who deploys a variety of "Mecha Soldiers" against the planet's defenses. The only thing standing between the Earthlings and annihilation is the transforming, karate-using super robot, Daimos, and its pilot, Kazuya Ryuuzaki. But that changes when he meets and falls in love with a mysterious girl named Erika, who turns out to be Richter's sister. Over the course of their struggles to reunite, Kazuya and Erika each learn that the other's people are not all evil... and that their own people are not all good. (Source: AniDB)

Curtis Newton, aka Captain Future, is an orphan. His parents died in their artificial satellite while he was an infant. His father was a scientist, who has abandoned earth for the satellite to dedicate his life for science along with his aging friend the genius Dr Simon Wright. Wright senses his death, and decides to implant his brain in a mechanical container. They both manufactured a superior robot and an android. Captain future dedicated his life to fight evil along with his three men, the brain, android, and robot. (Source: ANN)