Terra is a character in a imaginary post-apocalyptic world where Earth's resources has been nearly used up. In order to preserve humanity and Earth, the governments create machines to gather what little resources are left to construct two worldships called Gemini. The people are rounded up onto the worldships to orbit around the galaxy in hope that Earth recovers by the time one of the Gemini returns. Terra was an overseer that gave out instructions. She uses a device that connects to her back that uses magnetism to achieve levitation.