Twins, Sara and Cora Sonders, are newly minted Captains in the United Human Confederation’s Fleet. But could their first assignment turn out to be their last?

Thirty years ago, the Elif came from the stars. Their ships filling our skies. Unlike all the movies had taught us, they really did come in peace. They brought technology we had only dreamed possible, but more importantly, they brought us magic to make it all work.

Now they need something in return.

The UHS Raven, humanity's most advanced ship, will be Sara and Cora's first command. Are the experimental systems on the Raven too much for the twins to handle? It’s clear the Elif have a secret, and now it’s up to Sara and Cora to find the answers before humanity is wiped out completely.