They set off to explore deep space on a new type of ship. No one promises them that they can return, because no one knows what space can present to them, where different laws of physics may apply. And so it happened. Their ship throws them into the “shadow” Universe, where they see the same solar system, with the same planets, but that’s where the similarities end. The highly developed civilization inhabiting the Earth lives according to different laws. They don’t know how to get back, and all that remains is to start living among people, under someone else’s Sun, under someone else’s names. But there is an opportunity, and they are given a condition.