Royal fraternal twins Lyra and Ellea Hightower have grown up during a time of war. When their father, King Callora, bequeaths their hands in marriage to two strangers from Earth, the siblings from Jupiter must learn to adjust to a brand new society. Lyra marries the Emperor of the Vampires—a mysterious long-haired man named Caliban—who wants nothing more than to give Lyra a world of luxury. Ellea marries the Alpha werewolf Benton who lives a more quiet and subdued lifestyle. When the war follows them to Earth how will the Hightower siblings survive? Will they find love in their arranged marriages? Or will Saturn rule the Jupiteran throne?