A little boy sees a strange flying object and, without knowing it, leads Prince Planet into the greatest danger of his career! In this adventure, the brave boy from outer space meets the evil visitors from Simeona, the Simeons! The strange robot controlled by the Simeons traps Prince Planet and his friends in a plastic blanket and, soon, the valiant prince is imprisoned, in an orbit around the Earth! Can Prince Planet break the unbreakable plastic shell? Or is Prince Planet doomed?