Anna's family has a secret, and she had been left out of the loop until an ancient curse is revealed to be alien DNA. Anna is part Nyal, and her heat is pulling the men around her into rut. If she stays on Earth, it can get very bad very quickly. Running to the stars is her only hope to spare herself the fate of her ancestors.
Quake isn't eager to take a bride, but when he is presented with a portrait of himself and the Terran woman whose file he was just given, wrapped in a lover's embrace, he knows fate when it shows up in full colour.