In a distant future, humanoids have abandoned Earth and settled on other planets. Facing destruction, the people of Valhalla build four massive colony ships, but sabotage causes them to disintegrate. Peter, a young boy, awakens alone in a drifting medical module, severely injured.

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As the de facto commander, Peter relies on droids and advanced technology to survive, salvaging parts to construct a new vessel. His journey includes significant physical and technological transformations, including becoming a cyborg. Assisted by crystalline aliens, Peter gains enhanced abilities to communicate and navigate.