Two planets are connected by an interstellar passage that only living beings can cross—only in the exact form they were born in. Carrying anything with you isn’t possible. Earthlings on the new planet engage in expansion: they seize new territories and found their own states.
On the new planet rules Her Majesty Magic, which on Earth exists only in a nascent state… Going back to Earth is extremely expensive. All passages are controlled by clans. On Earth, inter-clan wars are forbidden by the emperor. Every showdown happens in the new world. Add to this the difficult relationships with the local aborigines—people who can’t be so easily called “natives”—and you get life here that may not be worth a broken farthing, but is still interesting…