Fight, Domon! Earth is the Ring.Domon returns to the Neo Japan space colony. There he undergoes a virtual reality simulation to determine if he is the right choice for Neo Japan's Gundam Fighter. The simulation is carried out without Domon's awareness. In the simulation Domon has just returned home after 10 years of training under Master Asia, the Undefeated of the East. He is reunited with his parents and his brother, Kyoji. It is shown that Kyoji is the person Domon has been carrying a photo around of. Kyoji and Domon's father show Domon the new Gundam they invented, the Ultimate Gundam. All of a sudden the police burst in and kill Domon's mother in the process. It is revealed that Kyoji is planning on using the Ultimate Gundam to take over Neo Japan and eventually the world. Kyoji leaves and Domon's father is put in a cryogenic state. The next simulation is Domon fighting the Devil Gundam, the corrupted form of the Ultimate Gundam. Thanks to visual effects, the Mobile Armor Fantoma is disguised as the Devil Gundam. Rain rushes out to stop the simulation, accidentally collides with her transport. Domon sees her and is reminded of her mother's death. This enrages Domon and he unlocks the Shining Gundam's Super Mode. The episode ends with Domon and Rain heading back to Earth with a renewed vigor.