Calix's world is dying. He and his brothers have hidden in a realm they created four-hundred years ago when the humans were hunting them down. As the three remaining unicorns, they've kept themselves safe and hidden away from the threat of humanity.But without the earth's magic, they and their world are slowly dying. They need the help of three humans, triplets, to save them, but Calix and his brothers disagree greatly on how their help is to be earned. Calix wants to save them and their world, but he refuses to hurt anyone—even a human— in the process.He'll have to befriend one of the men and hope for the best if he has any chance of surviving.