Some time in the distant future, Earth has crumbled and its inhabitants relocate to the planet Loka. Here, an intricate caste system is established, and the society ultimately creates GENs--Genetically Engineered Non-humans--to act as slaves for the upper classes. 
 Kayla, a GEN, is fearful for her Assignment day, when she learns what her role in society will be. But she seems to get off easy. She is assigned to take care of an elderly trueborn--the highest of the upper classes. 
 I'm having difficulty writing this review because I can't summarize Loka in a couple paragraphs. It's literally a completely different world, and we're thrown into it at the start. But there's so much explanation of the world and so little actually happening in the first half of the book. 
 When the action starts, things get exciting. Kayla thought she would never see her best friend Mishalla again, but she is surprised when they're able to communicate over the network--something that is completely forbidden to GENs. And they both learn there's something a little off about their respective assignments. After some digging, and an expected alliance with some humans, Kayla starts to learn what's really going on. 
 I like Loka. Other reviews say it's difficult to grasp, but I didn't feel that at all. It feels natural. But it's the story itself that I have problems with. Much of the world's "secrets" are revealed through simple dialogue, when I feel there could've been better (and more exciting) ways to present them. And there are a couple romances that felt forced, which I didn't believe them at all. The story would have been just fine without them, and a tad less cheesy. 
 But it is an interesting tale. I'm hesitant to recommend it, but if you like the futuristic dystopia thing (like me!) it's worth checking out.