After an accident, memories of his service on the Ninth Planet flash in the mind of auto mechanic Dima Khrust: amazing landscapes, the base of earthlings, battles with monsters, friends and his beloved girl Polina, whom he once saved... Khrust's colleagues twist their fingers at their temples, because theirs is completely different - ordinary army memories. But when Dima meets Polina in real life, he no longer doubts: someone corrected their memories. Who and why? The truth can only be found out by returning to the dangerous planet.