Don't you just hate those days when you're walking down the street just minding your own business and then suddenly poof! you're in another time completely? That's how Joseph Schwartz's day starts, and it more or less goes downhill from there. Before too long he's volunteered for a scientific experiment because everyone assumes he's mentally damaged (due to nobody being able to understand a word he's saying, and vice versa, thanks to a several thousand year language gap) and that, hey, it can't make him any worse. So what if all the animals we've tried it on so far have died? This time's the charm! Besides, it's not like he'll be able to complain to anyone. And that's all before the plot really begins to start.
The Empire novels are kind of the misbegotten children of the Asimov stable of SF novels. Not only were they early works (this is apparently his first real novel, unlike stuff like Foundation and I, Robot, which were collections of linked short stories) but they don't have the thematic weight that the other series have, basically winding up being those stories that were set between the Robot and Foundation years, and even that was kind of determined after the fact. There don't seem to be continuing characters and are essentially a trilogy in all but name.
But even here Asimov clearly has something going for him. His idea of the future is topsyturvy in parts, with Earth being radioactive and an extremely minor player in galactic affairs. Everyone is ruled by a massive empire now and no one believes that they all came from Earth, except for some archeologists. The plot of the novel sneaks up on you, where you think it's going to mostly be able Schwartz and his acclimation into future society, but he hardly even gets a chance to become used to his surroundings before people start chasing him in the name of science, until he gets the ability to fight back. His injection into sideways politics, a bystander who manages to upend the scene, isn't what you normally saw in Golden Age SF of the time, generally your protagonist was a go-getter space hero character, where nobody here falls into that category. It gives a weird everyman perspective to events, which only makes it seem stranger because everything is new for us, but with all the rapid changes even the characters don't seem to know which end is up.
It makes for fun reading when it gets going, which like most Asimov books it takes a bit to really kick into gear. Still, even at this point in time he had some of his old tricks, his allergy to anything resembling action is already apparent, with the ending coming along as people walking in from offscreen mopping their brows and going "Whew, that was tough. I almost didn't think we'd make it through!" It's the collision of ideas that sparks the mind here, as everyone tries to imagine the future in their own way, and coming to a type of happy medium doesn't seem to be an option. He makes you care, even though the stakes aren't anything we can really relate to and our one viewpoint character is absent for good chunks of a fairly short novel to begin with.
For amusement purposes, it's also interesting to see a future that doesn't seem to involve computers or the Internet (or famously, robots, which would get him into a pickle later when he tried to link the series) but there's a reason why SF never attempted to predict the future. But Asimov started out strong and while he's not in his prime here, he clearly has a taken on the genre that's groundbreaking in its own way, even if its more a quiet revolution than anything else.