Way outside a far-off galaxy, separated from the inner system by a wide asteroid belt, orbits an exoplanet with no common name. It's called EXO, with a string of numbers behind it no one bothers to memorise, and it's mostly barren and cold. The inhabitants live underground. The closer to the core, the warmer it is. Outsiders can't imagine living on such a lonely rock, but it's home to a thriving humanoid population that has decided the best way to live is the most practical way. Hopes and dreams don't belong on EXO; ambition and drive are not for personal gain but rather furthering the community. They mine rare rocks that are found on no other planet within the system, but they're not proud.

EXO cannot be considered happy, but the people are content, alive, and thriving.