Red Rising is like Hunger Games on Mars, where demi-godlike humans are the tributes duking it out.
The Spoiler-free Summary:
Darrow is a Hell-Diver and a part of the lowest class of people, called Reds. They’ve been charged with doing some dangerous mining on Mars. They live and work in deplorable underground conditions believing that their sacrifice will make the planet a better place to live. It’s all one big lie. While Darrow and his people toiled underground for generations, the world on the surface is not only livable but has been ages ago. The upper classes, each pegged in a color caste system, have been living off their blood and sacrifices quite nicely for quite a long time.