Frontiersmen

Humanity has stretched out across the stars and formed a new Frontier. Normally, the brave men and women of the Wall Guard stay on Earth to protect humanity's home, but when her lieutenant is abducted by alien raiders, Addi abandons her post and ventures into the Frontier. She enlists the help of her trainee and a young cartographer, but every expedition needs a guide and there is none better than the disavowed Frontiersman, Jackson August.

While they search for the missing lieutenant, Addi...