On the hot planet of Gomandam, the Mechanical Heart School, which advocates transforming carbon-based bodies into fully mechanical structures, has built a huge base here as its base, which has gradually developed into an urban cluster.

A powerful mechanical body can indeed bring many benefits, so many people admire this school. After all, even ordinary people can gain great advantages in work or life if they have a pair of mechanical arms or legs. In the end, the star of Gomanda became a transformation star where all kinds of mechanical modified people and modified creatures gathered. Dr. Sinderman is the leader of the Mechanical Heart School. In an unexpected industrial accident, he lost an arm, so he underwent the first mechanical transformation and obtained a mechanical arm. Since then, he has completed his transformation with his own genius and enthusiasm for technology, getting rid of the carbon-based body and becoming a complete robot. He was invited to become a member of the parliament and proposed the human evolution plan to transform all people into robots in the Star Domain Parliament many times, but other schools thought his ideas were too radical, and even the most radical Electronic Elf School thought it was unnecessary. It is said that Dr. Sinderman secretly carried out many illegal mechanical transformation plans, but the Star Domain Parliament has never been able to find enough evidence.

Located in the western part of the Gomandam continent, some ruins are half-covered by yellow sand. According to archaeological research, these should be the remains of pre-civilizations with ancient technology.