CALLA is an epic space opera series about a young girl named Calla, born into a utopian society of the future. Humans and animals no longer have to die. Together with highly advanced SI—the next evolution of AI—and the artificial humans known as the Asergia, they follow the trail to the source of all life. Meanwhile, Calla must battle an inborn physical decay that is destroying her nerves and bones. Her great dream of becoming a Shield Warrior and participating in the famous Shield Wars seems impossible. 

It took Reimer over 26 years to develop the world, the story, and all the characters of his most extensive novel series

in such detail.