In a solar system far from our own, two planets have been at war for centuries.

Fourteen-year-old Aza Raider wants nothing to do with the violence or the politics, but when she gets drafted to train on Ultruin's military space station, she immediately realizes she doesn't have a choice. Forced away from the comforts of home, and into a world where she's aided only by new friends, strangers, and the Commander's rebellious son, she struggles to stay afloat as she fights to learn the truth she knows is being kept from herself and the other soldiers.

Eighteen-year-old Eydin Majar has been training as a soldier for Tellus for three years, though he wants nothing more to escape back home to his boyfriend, Avon. Eydin's just barely keeping up with the other soldiers his age, and when the mysterious fourth-year testing process rolls around, he begins to doubt that the military will let him live long enough to ever see his home again.

Thrown into worlds of cloning, lies, and space travel, Eydin and Aza's paths are forced closer together as they make the choice to leave behind everything they've ever known. Their options are to save themselves, or to try to save the solar system. But in a universe set on destroying them, is either possible?